Milwaukee Art Institute, Catalogue of June Exhibitions, 1918.
C. Balleroy, "Le Salon des Independants et d'Art Center de New-York, les Expositions de Pennsylviania (sic) Academy et de Cincinnati Museum (Note: a review of the 1923 exhibition at The Pennsylvania Academy of the Fine Arts.) ," Revue du Vrai et du Beau, 10 Fevrier 1924.
No author noted, Exhibition catalogue, The Durant Hotel, Flint, Michigan, April twenty-first to twenty-eighth, 1928? "American and Spanish Paintings by Mathias J. Alten," .