These papers include two pages by Rubens Peale concerning landscapes, a notebook by Rembrandt Peale relating to the portrait of Washington, and a commonplace and recipe book, with sketches of gas lights.

This collection of letters, diaries, and other types of documents (both original and copies) was assembled primarily by Mary Jane Peale, who copied, or had copied, many family documents. The bulk of the collection centers on Charles Willson Peale, James Burd Peale, and Mary Jane Peale.

This collection of Robert Patterson family papers is composed primarily of the letters of Robert Maskell Patterson (1787-1854, APS 1809), but includes some of the business and personal papers of his father, Robert Patterson (1743-1824, APS 1783), and a series of letters written from Europe in 1855 by Helen Patterson Robins (1825-1919).

The collection of Charles Coleman Sellers (1903-1980) contains copious and detailed documentation of the art of Charles Willson Peale and his family. It consists of working files for Sellers's numerous publications, including his Portraits and Miniatures by Charles Willson Peale (1952); Charles Willson Peale with Patron and Populace (1969); C. W. Peale's Portraits of Washington (1951); Benjamin Franklin in Portraiture (1962); Mr. Peale's Museum (1980). Most files include photographs of the art work, notes on the piece, and correspondence with authorities or owners. Other series include one relating to the paintings of various other Peales, including Anna C., James, Mary Jane, Raphaelle, Rembrandt, Rubens, and Sarah Miriam, and a miscellaneous artist file, which includes the same type of material and information on many eighteenth- and nineteenth-century artists, including Thomas Eakins, George Healy, Robert Edge Pine, William Rush, Thomas Sully, Benjamin West, James Abbott McNeill Whistler, etc. There is a separate Sellers collection at Dickinson College, primarily personal in nature.