Bess Harris and R.G.P. Colgrove, Lawren Harris, 1969, a related 1927 pencil drawing entitled Mt. Lefroy reproduced page 64, a related oil sketch entitled Mt. Lefroy reproduced page 65, a related 1930 pencil drawing entitled Mt. Lefroy reproduced page 66 and the 1930 canvas entitled Mt. Lefroy reproduced page 67
Jeremy Adamson, Lawren S. Harris: Urban Scenes and Wilderness Landscapes 1906 - 1930, Art Gallery of Ontario, 1978, a related oil sketch circa 1930 entitled Rocky Mountain Sketch, Mt. Lefroy reproduced page 179
Jean Blodgett, Megan Bice, David Wistow, Lee-Ann Martin, The McMichael Canadian Art Collection, 1989, the 1930 canvas entitled Mt. Lefroy reproduced page 57 and front cover, a related oil sketch entitled Mount Lefroy and a related pencil drawing circa 1930 entitled Mt. Lefroy reproduced page 56
Charles C. Hill, The Group of Seven, 1995, the 1930 canvas entitled Mt. Lefroy reproduced page 269, catalogue #164