Passport photograph of painter Mathias Alten (seated right), Forest Emerson Mann (standing), and an unidentified sculptor (seated left) taken in Seville, Spain.

Newspaper photograph of Mathias and Bertha Alten and Mrs. John Cusick in gondola in Venice Italy. Alten was painting in Italy the summer of 1922.

Painter Mathias Alten working on portrait of friend and neighbor Carl Bornecrantz? in his Grand Rapids studio.

Mathias Alten painting model overlooking the Pacific at Laguna Beach, California.

Mathias Alten painting in his studio.

Mathias Alten on the beach.

Painter Mathias Alten in his Grand Rapids, Michigan studio.

Mathias Alten in California.

Mathias Alten at family outing.

Illustration of scene from Wolverine Brass Works in Grand Rapids Michigan from February 1921 cover of The Commonwealth: A magazine for workers, painted by Mathias Alten.

Home of painter Mathias Alten on the corner of Fuller and Hope St. in Grand Rapids, Michigan.

Diary kept by Camelia Alten, daughter of artist Mathias Alten, during her senior year at Central High School in Grand Rapids, Michigan from January 1, 1917 through July 2, 1917. In it she chronicles the details of her school, family, and social life.…