I have tried to search for the definition of this book part, similar to illus., ports., etc., but search engines keep thinking that I want information on the political system 'fascism'. What exactly are facsims.?
"facsims." refers to "facsimiles"; a facsimile is a "reproduction that has as its chief purpose to simulate the physical appearance of the original work as well as to provide an exact replica of the text" (AACR2 Glossary).