The Horatio Alger Society (H.A.S.) was founded in 1961 by Forrest Campbell and Kenneth B. Butler. The H.A.S. was incorporated at Mendota, Illinois in 1965 as a non-profit (501(c)(3)) organization.
The H.A.S. has evolved in its four-plus decades of existence as collectors interests have broadened. Originally a specialist organization for Alger collectors, the H.A.S. now embraces collectors and enthusiasts of all juvenile literature, including boys' and girls' series books, pulps, and dime novels.