Woodruff Family Fonds, RG 519, Brock University Archives.
Clifton House menu, RG 212, Brock University Archives.
Niagara Postcards collection, RG 373, Brock University Archives.
Pictorial Guide to the Falls of Niagara / John William Orr, 1842.
Illustrated Historical Atlas of the Counties of Lincoln and Welland, Ont. / H.R. Page & Co., 1876.
The Falls of Niagara, 1892.
The Clifton House: a short account of the first and second Clifton Houses / Francis J. Petrie, 1958.
Niagara Falls, Canada: A History of the City and the World Famous Beauty Spot. Niagara Falls, Ontario: Kiwanis Club of Stamford, Ontario, 1967.
A Map of the Vicinity of Niagara Falls, 1857 / Tunis's topographical and pictorial guide to Niagara Falls. Detroit : W.E. Tunis, .
Portrait of Samuel Zimmerman, 1857, Toronto Public Library.