I've just written a page about Sigma SLRs. The Sigma SA-300 of 1993 has the focussing motors in the lenses. This is like Canon, but unlike most other companies at the time, who had body-integral AF. Does anyone else remember the other camera around that time with motors in the lens >>> the Chinon CP9-AF. There were at least two lenses available, a 28-70 and a 70-210. They looked like Tokina lenses to me. I believe that the Chinon company was bought by Kodak, but eventually died off.

On an even more obscure note, does anyone remember that Praktica did AF? Well, with one lens. Sigma made a 55-200mm f4.5 lens for them, which had not just the motor but the sensing system and batteries all in the lens. Once you've turned the lens on with the switch on the barrel, AF is activated by a half press of the shutter button, but there's no lock to stop you taking a picture before focus is correct. AF speed isn't too bad (by the standards of the day), but it often gives a confirmation beep even though you can see from the split image that it is not in focus. It was also available as a Sigma, for other mounts. Equally obscure was a Tamron 70-210mm f4, also with motor, sensing system and batteries all in the lens. From memory, AF was activated by a button on the lens body. Considerably heavier and considerably slower to focus than the Sigma / Prakticar lens, it used the Adaptall2 system, and so could turn any SLR into an AF SLR.