DISRAELI DOCUMENTS
Monsieur Perrache tours the bicycle shows of the winter of 1904-05. There is discussion of the Hirondelle retro-direct and the Peugeot three speed hub (with two ‘direct’ and one retro gear!) but the star of the piece is the new Terrot Modèle H derailleur system.
(Source gallica.bnf.fr/ Bibliothèque nationale de France)