My feeling on trimming is that what's done is done. Who, when, why, where .... you'll likely never know & honestly, why should it matter that much to you? The book in front of you is the book in front of you: you want it or you don't. They were all "trimmed" when they were manufactured (sheared more properly). Another aspect of this is that it's too broad a spectrum to just lump ALL trimmed books into one general category. That's similar to simply saying "restored" when describing a book. There's a MASSIVE difference between a front cover edge trim & a whole book whacked on all three sides!!! Just like a spot of color touch & most of an entire cover being airbrushed. HUGE difference. By my eye, a slight trim is one of the least offensive "problems" a book can have. I don't advocate people to go & trim their books, but it IS done at times in the restoration process, hopefully by a trained professional. If they're priced at what I feel is appropriate, I'll buy them. Once again, what's done is done.