This collection of letters, while tiny, is actually quite rich in content. Cadwalader wrote to Samuel Meredith, a politician and fellow Revolutionary War soldier, concerning the war, his real estate holdings in Philadelphia, and the local political climate. The seven items are dated from October 5, 1779 to March 9, 1798, during which Cadwalader served in the military, reentered politics, got married, and then retired from public service.

This group includes wills for Benjamin Franklin Bache (B/B122.w), Richard Bache (B/B121.w), George Clymer (B/C625.w), Benjamin Franklin (B/F85.w), Francis Hopkinson (B/H768.w), Jared Ingersoll (Misc. Ms. Coll.), Thomas McKean (B/M195.w), Thomas Mifflin (B/M586.w), Robert Morris (B/M835.w), George Ross (B/R735.w), and Benjamin Rush (B/R89.w).

This autobiography relates Rush's experiences in college and medical school; his meetings with notable doctors; his life in Scotland, England, and France; his medical views; the military and politics during the Revolutionary War; and brief sketches of personalities of that period.

This volume contains short sketches of prominent American and European scholars, diplomats, and statesmen. "These short memoirs were composed in the heat of the summer of 1862; and the concluding page written on the 15th of August of that year, when I was about one month advanced in my ninety second year; my birthday being July 17th, 1771." Signed Saml. Breck. Persons discussed include Talleyrand Perigord; M. Volney; Rochefoucauld Liancourt; Louis Philippe, King of the French; Joel Barlow; William Bingham; Robert Morris; Alexander Hamilton; General Henry Knox; Doctor Benjamin Rush; Doctor Rush and William Cobbett.

The collection includes letters between Hutchinson and his uncle Israel Pemberton, written while Hutchinson was a student of medicine in London. There are also 12 tickets of admission to medical lectures in Philadelphia and London, including one given by William Hunter, and 3 unused cards of admission to Hutchinson's own lectures. Miscellaneous items include Hutchinson's marriage certificate; genealogical data on the Hutchinson, Hare, and Pemberton families; and stock certificates, 1857-1872, of the McKean and Elk Land and Improvement Company. Materials dated post-1793 are to and from Hutchinson family members.