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

Muskiteeto and Modern Home Heating May 1921 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.

Man repairing machine, December 1920 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.

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

The making of automobile tires August 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.

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.

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.""