The Marion Maresh papers date from 1932 to 1996 and measure 2.5 linear inches. The papers are arranged in two series: Biographical information and Medical career and education.

The Biographical Information series (1967-1996) consists of a list of birth and death dates within the Maresh family, a letter written by Gerald Maresh detailing his family history and a DynaGroup motivational program that consists of ten goal setting sessions

Maresh's career as a researcher is reflected in the Medical Career and Education series (1932-1987), which consists of a book draft, correspondence, research notes, lecture slides, and an embryology text. Maresh's Physician's Certificate of 1932 and a letter of congratulations from the Dean's office of the University of Colorado's School of Medicine regarding her retirement in 1975 complete the series.