Vertical files are a way for libraries to organize items not cataloged individually, such as newspaper clippings, brochures, advertisements, or presentation handouts.
Special Collections has two extensive series of such material: the American Radicalism Vertical Files (ARVF) and the Popular Culture Vertical Files (PCVF).
Nearly 2000 topics are covered, with about 100 relating to LGBTQ issues. The vertical files are especially useful for local events and organizations.
You can identify these files with a keyword search. For example:
Here are just a handful of LGBTQ topics in the vertical files: