Collection relates mostly to the business affairs of William Cooke, as attorney and tobaco commisson merchant; about 150 letters (1785-1819); accounts; papers on the settlement of the estates of John Cooke and Mrs. William Young and John O'Donnell.

This collection contains the business records of Francis T. Null, a furniture dealer of Baltimore. Included are 10 bound volumes of accounting records, 9 small bank account books, 1 book of fabric samples, and miscellaneous papers, including letters, receipted bills, insurance policies, and publications, circa 1899-1950.