Some of that early Robert Crumb is hard to tell which printings. It’s subtle so i look at ebay listings of CGC comics of those printings and then i read the labels and compare the covers to figure which is which.
My Mother-in-Laws friend’s husband passed away a while back…she didn’t know what to do with them. I initially looked through them and didn’t see anything exciting. A few were maybe $20 books on a good day. But they were stored loose in a box for decades. Spine rolls, creases, foxing.
I can put a list together tomorrow. But I’ll post some pics that I have so far.