Alten also painted a Portrait of Henrietta (MIFP1064) in 1915.
Albert Doezema collection
Mathias Alten Memorial Exhibition
Annual Exhibition of Michigan Artists
Patricia Reed, Archivist/President of the Scarab Club, 2006, and Michael Crane, Assistant Curator of American Art, Detroit Institute of Arts, Compilers, "Exhibition Records, the Detroit Museum of Art and the Detroit Institute of Arts," .