sentences:  The building sat vacant until Huntington was somehow informed of the stalemate and decided to take over the project.He put on an addition, and the library's doors opened to the public in 1891.The library took on an important new role in 1930, when Archer M. Huntington, Collis's adopted son and benefactor of the Museum of the American Indian, Heye Foundation, built an addition to the Huntington Free Library to house the museum's book collection, which was transferred to the library.