My random translations of the photo captions, clockwise from top left are:

• Valentino Extra
• Record
• Velox Gran Turismo
• Record

I think that the correct labels might be:

• Campagnolo Valentino Extra
• Campagnolo Record
• Campagnolo Gran Turismo
• Campagnolo Record

• Publisher: New Cycling
• Document: New Cycling May 1981 - '81 Derailleur Collection
• Date: May 1981
• Derailleur brands: Campagnolo
• Derailleurs: Capmpagnolo Valentino Extra, Campagnolo Record, Campagnolo Gran Turismo (2270?), Campagnolo Record