Here is a lovely example of a Brochure, which I think, is from the end of 1958. The Yamaha range coprises only out of a 125 cc, 175 cc and 250 cc model (they even forgot to mention the type.....). The YD2 appeared in February 1959 but is not shown yet. But the participation and 6th place in the catalina Island Races are mentioned. That was in May 1958. So the brochure must be from the Fall of 1958!

Yamaha full-range 1958

You can "click" on each page to see it in large format, small format makes no sense here.

Page 1 Girl with the new Yamaha YA2 in front of one of the Tokyo Palaces.

Page 2 The Yamaha YD2 next to the beautiful Meiji Shrine in Tokyo.

Page 3 Yamaha was very proud of the hill-climbing ability of its models.

Page 4 Yamaha soars over the steepest hills! (Asama races....!)

Page 5 The range of 125 - 175 - 250 cc models is described.

Page 6 Technical features of the above 3 motorcycles.

Page 7 Detailed specifications like elctrics and tires/brakes. Manufacturing.

Page 8 Performance, colours and dimensions and some racing highlights.