Consists of the original manuscripts (both holograph and typed) of Main Line: A Philadelphia Novel by American author, Livingston Biddle (Princeton Class of 1940).

Consists of related correspondence, typescripts, editorial notes, and galley proofs for The Stories of F. Scott Fitzgerald, A Selection of 28 Stores, published by Charles Scribner's Sons in 1951, which American author and critic Malcolm Cowley edited and introduced.

Materials included are related to Cotsen's time working at Neutrogena. Items include Cotsen's personal and business effects, photo albums, Neutrogena souvenirs and ephemera, awards and certificates given to Cotsen, and video cassettes related to the business. Material also includes documents related to Cotsen's contributions to Neutrogena's art collections and exhibitions as well as inventories of art stored at the Neutrogena offices (including documents related to art that Cotsen bought from Nuetrogena and added to his private collection after Johnson and Johnson bought Nuetrogrena in 1994).

The Lloyd E. Cotsen Papers consist of papers and personal items of Lloyd Cotsen's related to his time as an executive at Neutrogena Corporation, his art and book collection practices, his philanthropic contributions, his archaeological interests, and photographs shot by Cotsen. Items related to the production of Cotsen Occasional Press publications are also included. Material dates from 1949 to 2021.