The geological field notes series (1919-1971) consists of observations, sketches, and measurements taken by Chester Longwell on geological field trips, primarily in southern Nevada but also throughout the United States, the United Kingdom, South Africa, and Australia.
The manuscript materials series (1917-1974) consists of Chester Longwell's handwritten and typed drafts of articles, speeches, and other written materials. The majority of the materials reference geological locations in southern Nevada, but also include articles on general geological topics, biographical memoirs, and several short fictional stories written by Longwell.
The published articles series (1923-1973) consists of reprints, offprints, and photocopies of articles and book chapters about geological topics written by Chester Longwell.
The subject files series (1917-1972) series consists of papers from professional geological associations and societies, financial matters, business concerns, and personal and professional matters. Also included are educational materials related to courses Longwell taught at Yale University.