During the summer of 1918, Charles Green, a librarian from the Massachusetts Agriculture College, served as the Acting Librarian for Camp Johnston in Jacksonville, Florida. While his tenure was brief, the Charles R. Green Papers in the American Library Association (ALA) Archives reveal Green’s rapid appointment and promotion. It also shows how quickly circumstances could change within the ALA’s Library War Service and the adaptability of its volunteers.

As the American Library Association (ALA) celebrates 150 years, we’re drawing inspiration from key events since its 1876 founding: from the first conventions and library schools, through wartime and the fight for civil rights, to seismic technological advancements and the existential threats of the current moment. Though not a comprehensive timeline of library history, the milestones collected here demonstrate lasting impact and how libraries and the profession are intertwined with the American story itself—as repositories of memory, arenas of debate, and enduring instruments of democratic life.