Sweeney, J. Gray "Mathias J. Alten (1871 -1938)," Exhibition Catalog (1979)
Milwaukee Art Institute, Catalogue of June Exhibitions, 1918.
Sweeney, J. Gray, with contributions by Sylvia Krissoff, Artists of Grand Rapids (1840 - 1980) (The Grand Rapids Art Museum and The Grand Rapids Public Museum, 1981) .
No author noted, "Artist Wins National Fame With His Nature Studies around Grand Rapids," Grand Rapids Herald, January 14, 1917.
Bernice Mancewicz, "The Alten Story: Long on Talent, Short on Recognition," The Grand Rapids Press, June 3, 1979, pg. 4-H, ill.
Smithsonian Institution Research Information System (SIRIS), "Alten, Mathias Joseph 1871-1938"