I'm hoping people's memories are better than mine.
I'm looking for an older black-and-white cartoon. I think it may have been after 1940?
The context is that many of the characters of fiction leave their books and interact. Sherlock Holmes, Dracula, Frankenstein's monster, the Wolf from Little Red Riding Hood. After some adventures they go back inside their respective book. This may have been part of a series? I've been hunting for this ever since older cartoons have become available on DVD and Blu Ray (Tex Avery is the latest).
I refer to cartoons like these as "generics", because of the absence of Bugs Bunny, Daffy, et al. Tex Avery did one for MGM on the future of the automobile that I've always liked. MGM's animated output became incredibly subversive once Avery arrived there.
My favorite Daffy Duck cartoon is 1945's Nasty Quacks. He was such a colossal pain in the ass in that one. LOL I liked his earlier, daffier persona over the Chuck Jones-mandated "embittered contract player" characterization.