DISRAELI DOCUMENTS

Huret - other references


see also TCF Rev Mens - 12/1932 La bicyclette au Salon de 1932

see also TCF Rev Mens - 12/1932 La bicyclette au Salon de 1932

T.C.F. Revue Mensuelle December 1932 - La bicyclette au Salon de 1932 scan 1 thumbnail


see also La Française Diamant - 9 Fois Champion de France 1933?

see also La Française Diamant - 9 Fois Champion de France 1933?

La Francaise Diamant - 9 Fois Champion de France scan 001 thumbnail





see also Le Cycle 10/1949 - image of Huret Competition

see also Le Cycle 10/1949 - image of Huret Competition

  • Publisher: Le Cycle
  • Date: October 1949
  • Derailleur brands: Huret
  • Derailleurs: Huret Competition
Le Cycle 1949 10 - Huret Competition thumbnail


see also Le Cycle 11/1949 - image of Huret Competition

see also Le Cycle 11/1949 - image of Huret Competition

  • Publisher: Le Cycle
  • Date: November 1949
  • Derailleur brands: Huret
  • Derailleurs: Huret Competition
Le Cycle 1949 11 - Huret Competition thumbnail


see also Holdsworth - Aids to Happy Cycling 1949

see also Holdsworth - Aids to Happy Cycling 1949

Holdsworth - Aids to Happy Cycling 1949 front cover thumbnail


see also Le Cycle 01/1950 - image of Huret Competition

see also Le Cycle 01/1950 - image of Huret Competition

  • Publisher: Le Cycle
  • Date: January 1950
  • Derailleur brands: Huret
  • Derailleurs: Huret Competition
Le Cycle 1950 01 - Huret Competition thumbnail


see also Le Cycle 06/1950 - image of Huret detension prototype

see also Le Cycle 06/1950 - image of Huret detension prototype

  • Publisher: Le Cycle
  • Date: June 1950
  • Derailleur brands: Huret
  • Derailleurs: Huret detension prototype
Le Cycle 1950 06 - Huret Detension prototype thumbnail


see also Le Cycle 10/1950 - image of Huret Randonneur

see also Le Cycle 10/1950 - image of Huret Randonneur

  • Publisher: Le Cycle
  • Date: September 1950
  • Derailleur brands: Huret
  • Derailleurs: Huret Randonneur
Le Cycle 1950 10 - Huret Randonneur thumbnail


see also Le Cycle 10/1950 - image of Huret Spécial-Retro

see also Le Cycle 10/1950 - image of Huret Spécial-Retro

  • Publisher: Le Cycle
  • Date: October 1950
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial-Retro
Le Cycle 1950 10 - Huret Spécial-Retro thumbnail


see also Le Cycle 07/1951 - image of Huret detension prototype

see also Le Cycle 07/1951 - image of Huret detension prototype

  • Publisher: Le Cycle
  • Date: July 1951
  • Derailleur brands: Huret
  • Derailleurs: Huret detension prototype
Le Cycle 1951 07 - Huret Detension prototype thumbnail


see also Le Cycle 09/1951 - image of Huret Cyclotouriste

see also Le Cycle 09/1951 - image of Huret Cyclotouriste

  • Publisher: Le Cycle
  • Date: September 1951
  • Derailleur brands: Huret
  • Derailleurs: Huret Cyclotouriste
Le Cycle 1951 09 - Huret Cyclotouriste thumbnail


see also Le Cycle 10/1951 - image of Huret detension prototype

see also Le Cycle 10/1951 - image of Huret detension prototype

  • Publisher: Le Cycle
  • Date: October 1951
  • Derailleur brands: Huret
  • Derailleurs: Huret detension prototype
Le Cycle 1951 10 - Huret Detension prototype thumbnail


see also Le Cycle 04/1952 - image of Huret Spécial Louison Bobet

see also Le Cycle 04/1952 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: April 1952
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1952 04 - Huret Special Louison Bobet thumbnail


see also Le Cycle 04/1952 - image of Huret Spécial-Retro-Touriste

see also Le Cycle 04/1952 - image of Huret Spécial-Retro-Touriste

  • Publisher: Le Cycle
  • Date: April 1952
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial-Retro-Touriste
Le Cycle 1952 04 - Huret Spécial-Retro-Touriste thumbnail


see also Le Cycle 10/1952 - image of Huret Spécial Louison Bobet

see also Le Cycle 10/1952 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: October 1952
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1952 10 - Huret Special Louison Bobet (1st scan) thumbnail


see also Le Cycle 10/1952 - image of Huret Spécial Louison Bobet (2nd scan)

see also Le Cycle 10/1952 - image of Huret Spécial Louison Bobet (2nd scan)

  • Publisher: Le Cycle
  • Date: October 1952
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1952 10 - Huret Spécial Louison Bobet (2nd scan) thumbnail


see also Le Cycle 08/1953 - image of Huret Spécial Louison Bobet

see also Le Cycle 08/1953 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: August 1953
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1953 08 - Huret Spécial Louison Bobet thumbnail


see also Le Cycle 10/1953 - image of Huret Spécial Louison Bobet

see also Le Cycle 10/1953 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: October 1953
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1953 10 - Huret Spécial Louison Bobet thumbnail


see also Le Cycle 10/1953 - image of Huret Spécial-Retro-Touriste

see also Le Cycle 10/1953 - image of Huret Spécial-Retro-Touriste

  • Publisher: Le Cycle
  • Date: October 1953
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial-Retro-Touriste
Le Cycle 1953 10 - Huret Spécial-Retro-Touriste thumbnail


see also Le Cycle 05/1954 - image of Huret Spécial Louison Bobet

see also Le Cycle 05/1954 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: May 1954
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1954 05 - Huret Special Louison Bobet thumbnail


see also Le Cycle 08/1954 - image of Huret Spécial Louison Bobet

see also Le Cycle 08/1954 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: August 1954
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1954 08 - Huret Special Louison Bobet thumbnail


see also Le Cycle 07/1955 - image of Huret Spécial Louison Bobet

see also Le Cycle 07/1955 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: July 1955
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1955 07 - Huret Special Louison Bobet thumbnail


see also Le Cycle 08/1956 - image of Huret Spécial Louison Bobet

see also Le Cycle 08/1956 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: August 1956
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1956 08 - Huret Special Louison Bobet thumbnail


see also Le Cycle 10/1957 - image of Huret Spécial Louison Bobet

see also Le Cycle 10/1957 - image of Huret Spécial Louison Bobet

  • Publisher: Le Cycle
  • Date: October 1957
  • Derailleur brands: Huret
  • Derailleurs: Huret Spécial Louison Bobet
Le Cycle 1957 10 - Huret Spécial Louison Bobet thumbnail


see also Le Cycle 02/1958 - image of Huret Monobloc

see also Le Cycle 02/1958 - image of Huret Monobloc

  • Publisher: Le Cycle
  • Date: February 1958
  • Derailleur brands: Huret
  • Derailleurs: Huret Monobloc
Le Cycle 1958 02 - Huret Monobloc thumbnail


see also Sporting Cyclist 07/1958 - Walter Flory ad

see also Sporting Cyclist 07/1958 - Walter Flory ad

  • Publisher: Sporting Cyclist
  • Date: July 1958
  • Derailleur brands: Huret
  • Derailleurs: Huret Tour de France, Huret Special Louisson Bobet (no detensioner), Huret Special Louisson Bobet
Sporting Cyclist July 1958 Walter Flory advert thumbnail


see also Le Cycle 10/1958 - image of Huret Allvit

see also Le Cycle 10/1958 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: October 1958
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1958 10 - Huret Allvit thumbnail


see also Sporting Cyclist 01/1959 - Walter Flory ad

see also Sporting Cyclist 01/1959 - Walter Flory ad

Sporting Cyclist January 1959 Walter Flory advert thumbnail


see also Le Cycle 02/1959 - image of Huret Allvit (1st scan)

see also Le Cycle 02/1959 - image of Huret Allvit (1st scan)

  • Publisher: Le Cycle
  • Date: February 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1959 02 - Huret Allvit (1st scan) thumbnail


see also Le Cycle 02/1959 - image of Huret Allvit (2nd scan)

see also Le Cycle 02/1959 - image of Huret Allvit (2nd scan)

  • Publisher: Le Cycle
  • Date: February 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1959 02 - Huret Allvit (2nd scan) thumbnail


see also Le Cycle 02/1959 - image of Huret Allvit (3rd scan)

see also Le Cycle 02/1959 - image of Huret Allvit (3rd scan)

  • Publisher: Le Cycle
  • Date: February 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1959 02 - Huret Allvit (3rd scan) thumbnail


see also Sporting Cyclist 04/1959 - Walter Flory ad

see also Sporting Cyclist 04/1959 - Walter Flory ad

  • Publisher: Sporting Cyclist
  • Date: April 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit, Huret Tour de France, Huret Special Louisson Bobet
Sporting Cyclist April 1959 Walter Flory advert thumbnail


see also Le Cycle 05/1959 - image of Huret Allvit

see also Le Cycle 05/1959 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: May 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1959 05 - Huret Allvit thumbnail


see also Le Cycle 07/1959 - image of Huret Allvit

see also Le Cycle 07/1959 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: July 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1959 07 - Huret Allvit thumbnail


see also Le Cycle 10/1959 - image of Huret Allvit

see also Le Cycle 10/1959 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: October 1959
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1959 10 - Huret Allvit thumbnail


see also Cyclo - Origine du dérailleur 1959

see also Cyclo - Origine du dérailleur 1959

  • Publisher: Cyclo
  • Date: 1959
  • Derailleur brands: Cyclo, plus too many others to mention here
  • Derailleurs: too many to mention
Cyclo - Origine du derailleur scan 1 thumbnail


see also Le Cycle 04/1960 - image of Huret derailleur tools

see also Le Cycle 04/1960 - image of Huret derailleur tools

Le Cycle 1960 04 - Huret derailleur tools thumbnail


see also Le Cycle 07/1960 - image of Huret Allvit

see also Le Cycle 07/1960 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: July 1960
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1960 07 - Huret Allvit thumbnail


see also Le Cycle 09/1960 - image of Huret Allvit

see also Le Cycle 09/1960 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: September 1960
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1960 09 - Huret Allvit thumbnail


see also Le Cycle 09/1960 - image of Huret Monobloc (1st scan)

see also Le Cycle 09/1960 - image of Huret Monobloc (1st scan)

  • Publisher: Le Cycle
  • Date: September 1960
  • Derailleur brands: Huret
  • Derailleurs: Huret Monobloc
Le Cycle 1960 09 - Huret Monobloc (1st scan) thumbnail


see also Le Cycle 09/1960 - image of Huret Monobloc (2nd scan)

see also Le Cycle 09/1960 - image of Huret Monobloc (2nd scan)

  • Publisher: Le Cycle
  • Date: September 1960
  • Derailleur brands: Huret
  • Derailleurs: Huret Monobloc
Le Cycle 1960 09 - Huret Monobloc (2nd scan) thumbnail


see also Le Cycle 10/1960 - image of Huret Allvit

see also Le Cycle 10/1960 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: October 1960
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1960 10 - Huret Allvit thumbnail


see also Sporting Cyclist 01/1961 - Walter Flory ad

see also Sporting Cyclist 01/1961 - Walter Flory ad

Sporting Cyclist January 1961 Walter Flory advert thumbnail


see also Le Cycle 03/1961 - image of Huret Allvit (1st scan)

see also Le Cycle 03/1961 - image of Huret Allvit (1st scan)

  • Publisher: Le Cycle
  • Date: March 1961
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1961 03 - Huret Allvit (1st scan) thumbnail


see also Le Cycle 03/1961 - image of Huret Allvit (2nd scan)

see also Le Cycle 03/1961 - image of Huret Allvit (2nd scan)

  • Publisher: Le Cycle
  • Date: March 1961
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1961 03 - Huret Allvit (2nd scan) thumbnail


see also Sporting Cyclist 08/1961 - Walter Flory ad

see also Sporting Cyclist 08/1961 - Walter Flory ad

Sporting Cyclist August 1961 Walter Flory advert thumbnail


see also Sporting Cyclist 02/1962 - Walter Flory ad

see also Sporting Cyclist 02/1962 - Walter Flory ad

Sporting Cyclist February 1962 Walter Flory advert thumbnail


see also Boy’s Life 1962 - Schwinn ad

see also Boy’s Life 1962 - Schwinn ad

Boys Life 1962 - Schwinn advert thumbnail


see also Le Cycle 06/1962 - image of Huret Allvit

see also Le Cycle 06/1962 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: June 1962
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1962 06 - Huret Allvit thumbnail


see also Le Cycle 09/1962 - image of Huret Allvit

see also Le Cycle 09/1962 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: September 1962
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1962 09 - Huret Allvit thumbnail


see also Le Cycle 01/1963 - image of Huret Allvit

see also Le Cycle 01/1963 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: January 1963
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1963 01 - Huret Allvit thumbnail


see also Le Cycle 03/1963 - image of Huret Svelto

see also Le Cycle 03/1963 - image of Huret Svelto

  • Publisher: Le Cycle
  • Date: March 1963
  • Derailleur brands: Huret
  • Derailleurs: Huret Svelto
Le Cycle 1963 03 - Huret Svelto thumbnail


see also Le Cycle 04/1963 - image of Huret Svelto

see also Le Cycle 04/1963 - image of Huret Svelto

  • Publisher: Le Cycle
  • Date: April 1963
  • Derailleur brands: Huret
  • Derailleurs: Huret Svelto
Le Cycle 1963 04 - Huret Svelto thumbnail


see also Boy’s Life 1963 - Schwinn ad

see also Boy’s Life 1963 - Schwinn ad

Boys Life 1963 - Schwinn advert thumbnail



see also Cycling Tour - Parts Accessory Catalog 1963?

see also Cycling Tour - Parts Accessory Catalog 1963?

Cycling Tour  - Parts Accessory scan 01 thumbnail


see also Svelto - Explanation of how to install the new transmission 1963?

see also Svelto - Explanation of how to install the new transmission 1963?

Svelto - Explanation of how to install the new transmission scan 01 thumbnail



see also Boy’s Life 1964 - Schwinn ad

see also Boy’s Life 1964 - Schwinn ad

Boys Life 1964 - Schwinn advert thumbnail


see also Schwinn Sprint - Card 1964?

see also Schwinn Sprint - Card 1964?

  • Publisher: Schwinn
  • Date: 1964?
  • Derailleur brands: Schwinn, Manufactured by Huret
  • Derailleurs: Schwinn Sprint (3848)
Schwinn sprint - card thumbnail


see also Le Miroir des Sports 04/1965 - Les Freres Huret

see also Le Miroir des Sports 04/1965 - Les Freres Huret

Le Miroir des Sports 05-04-1965 Huret article thumbnail


see also Le Cycle 10/1966 - image of Huret Luxe

see also Le Cycle 10/1966 - image of Huret Luxe

Le Cycle 1966 10 - Huret Luxe thumbnail


see also Le Cycle 11/1966 - image of Huret Luxe

see also Le Cycle 11/1966 - image of Huret Luxe

Le Cycle 1966 11 - Huret Luxe thumbnail



see also Le Cycle 06/1968 - image of Huret Svelto

see also Le Cycle 06/1968 - image of Huret Svelto

  • Publisher: Le Cycle
  • Date: June 1968
  • Derailleur brands: Huret
  • Derailleurs: Huret Svelto
Le Cycle 1968 06 - Huret Svelto thumbnail


see also Le Cycle 10/1968 - image of Huret Allvit

see also Le Cycle 10/1968 - image of Huret Allvit

  • Publisher: Le Cycle
  • Date: October 1968
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit
Le Cycle 1968 10 - Huret Allvit thumbnail


see also Le Cycle 10/1968 - image of Huret Svelto

see also Le Cycle 10/1968 - image of Huret Svelto

  • Publisher: Le Cycle
  • Date: October 1968
  • Derailleur brands: Huret
  • Derailleurs: Huret Svelto
Le Cycle 1968 10 - Huret Svelto thumbnail


see also Boy’s Life 1968 - Vista ad

see also Boy’s Life 1968 - Vista ad

Boys Life 1968 - Vista advert thumbnail


see also Le Cycle 01/1969 - image of Huret Luxe

see also Le Cycle 01/1969 - image of Huret Luxe

Le Cycle 1969 01 - Huret Luxe thumbnail






see also Gold Key Comics 1969 - Vista ad

see also Gold Key Comics 1969 - Vista ad

Gold Key Comics 1969 - Vista advert thumbnail




see also Le Cycle 11/1970 - image of Huret Allvit 1900 CS

see also Le Cycle 11/1970 - image of Huret Allvit 1900 CS

  • Publisher: Le Cycle
  • Date: November 1970
  • Derailleur brands: Huret
  • Derailleurs: Huret Allvit 1900 CS
Le Cycle 1970 11 - Huret Allvit 1900 CS thumbnail


see also Mel Pinto catalog - 1970 to 1975

see also Mel Pinto catalog - 1970 to 1975

Mel Pinto catalog - 1970 to 1975 scan 1 thumbnail



see also Murray - Your 5 and 10 Speed Derailleur Bicycle 1971

see also Murray - Your 5 and 10 Speed Derailleur Bicycle 1971

Murray 1971 - Your 5 and 10 Speed Derailleur Bicycle page 1 thumbnail


see also Boys Life 1971 - Huffy ad

see also Boys Life 1971 - Huffy ad

Boys Life 1971 - Huffy advert thumbnail


see also Raleigh Owners Handbook 1971?

see also Raleigh Owners Handbook 1971?

Raleigh Owners Handbook - page 1 thumbnail


see also Le Cycle 06/1972 - image of Huret Jubilee

see also Le Cycle 06/1972 - image of Huret Jubilee

  • Publisher: Le Cycle
  • Date: June 1972
  • Derailleur brands: Huret
  • Derailleurs: Huret Jubilee
Le Cycle 1972 06 - Huret Jubilee thumbnail


see also Le Cycle 10/1972 - image of Huret Jubilee

see also Le Cycle 10/1972 - image of Huret Jubilee

  • Publisher: Le Cycle
  • Date: October 1972
  • Derailleur brands: Huret
  • Derailleurs: Huret Jubilee
Le Cycle 1972 10 - Huret Jubilee thumbnail


see also Le Cycle 10/1972 - image of Huret Jubilee long cage

see also Le Cycle 10/1972 - image of Huret Jubilee long cage

  • Publisher: Le Cycle
  • Date: October 1972
  • Derailleur brands: Huret
  • Derailleurs: Huret Jubilee long cage
Le Cycle 1972 10 - Huret Jubilee long cage thumbnail


see also Le Cycle 12/1972 - image of Huret Jubilee long cage

see also Le Cycle 12/1972 - image of Huret Jubilee long cage

  • Publisher: Le Cycle
  • Date: December 1972
  • Derailleur brands: Huret
  • Derailleurs: Huret Jubilee long cage
Le Cycle 1972 12 - Huret Jubilee long cage thumbnail


see also Le Cycle 12/1972 - image of Huret Super Allvit

see also Le Cycle 12/1972 - image of Huret Super Allvit

  • Publisher: Le Cycle
  • Date: December 1972
  • Derailleur brands: Huret
  • Derailleurs: Huret Super Allvit
Le Cycle 1972 12 - Huret Super Allvit thumbnail


see also Gold Key Comics 1972 - Vista ad

see also Gold Key Comics 1972 - Vista ad

Gold Key Comics 1972 - Vista advert thumbnail




see also Le Cycle 11/1973 - image of Huret Challenger

see also Le Cycle 11/1973 - image of Huret Challenger

  • Publisher: Le Cycle
  • Date: November 1973
  • Derailleur brands: Huret
  • Derailleurs: prototype Huret Challenger
Le Cycle 1973 11 - Huret Challenger thumbnail


see also Holdsworth - Bike Riders Aids 1975

see also Holdsworth - Bike Riders Aids 1975

Holdsworth - Bike Riders Aids 1975 front cover thumbnail


see also Richard Ballantine - Richard’s Bicycle Book 1979

see also Richard Ballantine - Richard’s Bicycle Book 1979

Richard Ballantine - Richards Bicycle Book front cover thumbnail


see also New Cycling 05/1981 - '81 Derailleur Collection

see also New Cycling 05/1981 - '81 Derailleur Collection

  • Publisher: New Cycling
  • Date: May 1981
  • Derailleur brands: too numerous to list here
  • Derailleurs: too numerous to list here
New Cycling May 1981 - Derailleur Collection page 017 thumbnail



see also Bicisport 1984 Jul - Il mercato delle meraviglie

see also Bicisport 1984 Jul - Il mercato delle meraviglie

BiciSport 1984-07 Il mercato della meraviglie scan 01 thumbnail



see also Bicisport 1985 Apr - la Bicicletta italiana

see also Bicisport 1985 Apr - la Bicicletta italiana

BiciSport 1985-04 la Bicicletta italiana scan 01 thumbnail