A vertical file is a kind of old-fashioned library research tool compared to today's paperless, computerized world of research. The vertical file is home to all the miscellaneous scraps of paper about some common topics, maintained by the library staff. In it you will generally find some combination of the following: brochures, pamphlets, newspaper articles, clippings from various sources, and written material from a variety of sources (such as from organizations like the American Red Cross). There was a time when nearly everything was printed and computers were not the primary source of information; in those days, vertical files were useful for research beyond periodicals (magazines) and newspapers. An almanac is a totally different reference tool, as I think you know based on your question. It is a book which lists all kinds of factual "tidbits" in a diverse set of categories, so the answer is no.