Gulick and his wife Charlotte founded the Camp Fire Girls—the first nonsectarian organization for girls in the United States—in 1910, and the organization was incorporated in Washington, D.C. in 1912 as a national agency. Materials within this sub-series include quarterly and annual reports, documentation about the programs, policies, and structures of the organization, writings by Gulick about the Camp Fire Girls, writings related to the Camp Fire Girls and patriotism during World War I, and writings about the Camp Fire Girls by other authors.