Chicago Institute of Design;
University of Oregon (1947);
University of Michoacan, Mexico (1948, 1950, 1951)

Sandgren taught drawing and painting at the Oregon State College (now University) for 38 years. His murals are in the Lane County Courthouse in Eugene and the Oregon State University library in Corvallis. Sandgren has traveled widely; the Oregon coast has been his main source of interest.

Oil, watercolor, prints (lithograph), collage