hmmm a checklist others may provide but with pictures .... that is another thing altogether. Some of the collectors here, I know have databases kept of their collection - a list of sorts but I doubt if it's with pics attachment for each figure. Your better off getting this - its small and pocketbook sized which is primarily what you may be after - each G1 figure listed in their botmode and altmode - all US released G1 only included. It's a good reference to own anyways and since it's small (although thick) enough it wont take much space in your drawer or shelf.
Ebay
http://www.ebay.com/itm/Transformers...item3a88c04761
more choices at..
Amazon
http://www.amazon.com/Warmans-Transf...rs+field+guide
Wanted AM partner Vanguard, Myclones Dirge, G1 Victory Leo, e-hobby Dark scream ( the black version), e-hobby Magnificus
Parts- AM partner Basher-side guns, G1 Actionmaster Elite Windmill's blades[I][B]