The fonds consists of correspondence, prose and photographs. Correspondence includes letters to his wife, sister and daughter. Prose includes manuscripts on landscape painters and an untitled novel written when Watson was 15. Included with the personal documents are a marriage license and a will.
The collection consists of correspondence of explorers who surveyed the boundary zones between Canada and the United States, and of several other diplomats, officers and aids who became involved in the arbitration of the border. There are also several bound and unbound manuscripts, including various treaties, arguments, awards, memorials and commissioners' proceedings relating to settlements of the Canadian-American border.
The fonds consists of correspondence with W.D. Herridge concerning the New Democracy Movement, statements and addresses by W.D. Herridge, New Democracy platform, instructions regarding New Democracy assemblies, an address by G.H. Barr and news clippings.
