After his death, Falter's widow, Mary Elizabeth Falter, donated several paintings, personal papers, and memorabilia from his studio to the Nebraska State Historical Society. The material reflects Falter's career from 1930 to 1982.
Following Falter's passing, his widow, Mary Elizabeth Falter, gifted a range of materials to the Nebraska State Historical Society, including paintings, papers, and memorabilia from his studio, which provide insight into his professional activities from 1930 to 1982.