Nathan Heald papers, 1812-1856. In many instances these manuscripts supplement or complement the Heald papers in 8U and 17U. However, these were neither collected nor used by Draper, but were gathered from 1913 to 1916 from Heald descendants by Milo M. Quaife, superintendent of the State Historical Society of Wisconsin, who then had them arranged, bound, and added to the Draper Collection. Many pieces were severely damaged by dampness and mildew before their acquisition by Quaife. Some are virtually illegible.

Military papers related to the War of 1812 include a mutilated portion of a diary by an unidentified soldier marching to the relief of Fort Wayne in August and September 1812; letters exchanged between Heald and Thomas Forsyth concerning the latter's war losses in Chicago; and correspondence and receipts involved in Heald's claims to the federal government for his expenses and losses. Among the latter papers is one letter (1813) signed by Thomas T. Tucker, the treasurer of the United States and one letter (1855) about her continuing claim for war compensation written by Nathan's widow, Mrs. Rebekah Heald.

Postwar papers deal primarily with Heald's business affairs in Missouri, pensions for himself and later for his widow, and family matters. Among these papers are a deed from Jacob Zumwalt for land purchased by Heald in St. Charles County, Missouri, in 1817; financial accounts recording many of Heald's personal, farm, and household expenditures, 1814-1833, with one page of brief later entries, 1832-1837, for his son Darius; and letters of genealogical interest by Nathan Heald's brother Thomas (1815) and by William L. Lincoln (1854). A number of other papers, 1830-1848, originated in the McCausland family related to the Healds through marriage. Most notable among these are the payroll, muster roll, and clothing list for the company of Missouri volunteers raised by David McCausland in 1847 for Mexican War service.