The Alfred Goddard Kay Autograph Collection consists of letters, documents, and other miscellanea signed by significant 18th and 19th century American and French figures collected by American stock broker Alfred Goddard Kay (Princeton Class of 1912).

Alfred J. Lotka (1880-1949), a statistician for the Metropolitan Life Insurance Company, was a significant contributor to the field of demography. He was a pioneer in the study of population dynamics and conducted research on the mathematical theory of evolution and the mathematical analysis of populations. Lotka's papers document his scholarship and his involvement in professional organizations and include drafts of his works, his notes and research materials, and correspondence.

Consists of nineteenth-century account books of Alfred Leeb and his wife relating to their home in South Orange, N.J.

Consists of letters, photographs, and manuscripts of Alfred Noyes.

Consists chiefly of letters by Alfred Thayer Mahan to his publisher regarding his writings about United States naval history. Mahan was a U.S. naval officer in the Civil War, and his work on the importance of adequate navies and merchant marines influenced the policies and philosophies of national leaders across the globe, including those of the 26th president of the United States, Theodore Roosevelt.

Consists of manuscripts for three novels by American novelist and children's writer Al Hine.

Consists primarily of letters (1952-1965) Alice B. Toklas wrote to her friends Lloyd Frankenberg and his wife, the painter Loren MacIver. Toklas is best known as the life partner of writer Gertude Stein.

Consists primarily of correspondence and printed material, along with two diaries from 1926, a matted postcard, a photogravure plate, and a piece of hair jewelry. These family papers primarily center on Alice Holden (née Cort), as the correspondence are letters between members of the Cort family, or letters to her from her children. The collection largely documents the relationships of the Holden and Cort families in New York state between the 19th and 20th centuries.

Consists of selected letters and photographs of authors, poets, and friends collected by Alice Davis Tibbetts, secretary, companion, and romantic partner of Edgar Lee Masters.

The Alice Raphael Collection of Faust Materials contains photographs and epherema relating to the Yale bicentennial of Goethe's Faust , for which Alice Raphael's translation was used, as well as information about other productions of Faust and about Raphael's other work.