Lee's Guide to Gobots

I've had this kicking around for ages, it's a free supplement given away with some issue or other of Lee's Toy Magazine. It's not 100% complete (where's Spy-Eye?) and the potted intro does it few favours (notably being unable to identify Popy as the line's originator), but it does manage to be a respectable overview of the US Gobots line, with pictures of most figures carded or boxed.

High-Res version (~20MB)
Low-Res version (~5MB)