Just got off the phone with the librarian at the New York State Archives. Apparently they have a "nice thick file" of Lepke materials there courtesy of Sing Sing Prison, and he's going to see about getting me a copy of it. Though the psychological profiles seem to be sealed and unavailable, I can't wait to see what else I can get my hands on - warden's notes, personal mail, visitor records. Delicious! Oh, and lookie what I found on the Archive website!