It's odd that I, of all people, would defend John Holmes (I've read that he wasn't that great a human being). Still, here are some features where he did what I consider to be good work. Watch them, and make your own judgment. Remember, we're talking about his sexing NOT his horrible acting.
"Stormy" (especially with Linda Wong):
http://vintage-erotica-forum.com/sho...ghlight=stormy
"Eruption":
Aunt Peg & Sharon Kane from "Aunt Peg":
Donna Hart -my favorite- also from "Aunt Peg":
http://vintage-erotica-forum.com/sho...light=Aunt+Peg
The China Cat (maybe his best, start to finish):
http://vintage-erotica-forum.com/sho...ight=china+cat
Also, there's Linda McDowell in "Beyond Fullfillment", and Misty Dawn-his wife in "Nasty Nurses"
Thanks to the original unloaders