Warren Public Library Board was organized in June 1916 after a public fundraising campaign to buy books and periodicals. In 1917, a grant of $10,000 from the Carnegie Corporation was confirmed to support construction of a free public library. The Library Board selected Samuel Craig as supervising architect in 1917, and the building is Neoclassical in design. Supply and transportation problems resulting from World War I halted construction temporarily. Warren Free Public Library was dedicated on June 5, 1920, with over 1,500 books. Improvements were completed in the 1990s. It is one of the 1,679 libraries built in the U.S. with funds from philanthropist Andrew Carnegie, and Indiana built more Carnegie libraries than any other state.