Vertical files are a way for libraries to organize uncataloged materials by subject.
Contents of a vertical file may range from just a few sheets to a folder six inches thick, and may include pamphlets, advertisements, magazine and newspaper clippings, fundraising letters, and more.
A vertical file may be started for a topic, such as food cooperatives, or an organization, such as the United Farm Workers.
Use the term ARVF (for American Radicalism Vertical Files) as a keyword to locate vertical files. For example: