Business correspondence files include letters from (and some copies to) significant cultural agencies across Canada. Of note are papers relating to his successful Guggenheim Fellowship to Paris and letters from notable cultural leaders such as Harry McCurry, Kathleen Fenwick, Alan Jarvis, Donald Buchanan and Paul Arthur. Nominal business files document significant projects such as a Salvation Army mural in Toronto as well as his participation in group shows in Canada and in international exhibitions. Notable institutions include the Art Gallery of Ontario, the Canadian War Museum which held a 1998 exhibition entitled Momento Mori which featured his war art; the federation of Canadian Artists; the National Ballet of Canada which commissioned him to do costume designs for the 1961 production of Remarkable Rocket (LAC also owns the original drawings for the costumes); the Picture Loan Society in Toronto, run by Douglas duncan which gave Nichols his first solo exhibition; and the Sarnia Public Library and Art Gallery which gave Nichols a retrospective in 1983. Nichols served as well as President of the Canadian Group of Painters in the 1950s. Certain files from such galleries as Roberts Gallery in Toronto and the Vancouver Art Gallery are witness to his enormous success in the early years of his career.