Consists of manuscripts of talks, articles, correspondence, photographs, and slides.  Most relate to chemistry and chemists at Grinnell College in the early and mid-twentieth century.

Consists of lantern slides of late 19th and early 20th century chemical aparatus and four notebooks of chemical notes.  Professor William C. Oelke suggests that Hendrixson had equipment to copy pictures from books and may have photographed the portraits and laboratory apparatus from published material to use in his class teaching.