Sketch of drawing class by Mathias Alten. captioned ""Mr. Alten's life class at work, with well draped model posing, from a sketch by Alten.""

Sketch of Mathias Alten by Ray Barnes, published in the Grand Rapids Press. One illustration used in article, ""G.R. artist began his notable career near inspiring German miracle spring.""

Wheels--The world's oldest, greatest and simplest invention"" April 1921 cover illustrating an article in The Commonwealth: A magazine for workers painted by Mathias Alten.

Scene in Wolverine Brass Works Grand Rapids, Michigan, February 1921 cover illustrating an article in The Commonwealth: A magazine for workers painted by Mathias Alten.

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.

The making of automobile tires August 1921 cover illustrating an article in The Commonwealth: A magazine for workers painted by Mathias Alten.

John Segar, cabinet maker Grand Rapids Chair Co. October 1921 cover illustrating an article in The Commonwealth: a magazine for workers painted by Mathias Alten

What I get out of Making School Desks September 1921 cover illustrating an article in The Commonwealth: A magazine for workers painted by Mathias Alten.

Man repairing machine, December 1920 cover illustrating an article in The Commonwealth: A magazine for workers painted by Mathias Alten.

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.

Muskiteeto and Modern Home Heating May 1921 cover illustrating an article in The Commonwealth: A magazine for workers painted by Mathias Alten.

Stained glass window designed by Mathias Alten for his home in Grand Rapids, Michigan.