W.G.V. Balchin (Consultant Editor). The Country Life Book of the Living History of England. Country Life Books, 1981.
Harris, McGregor & Co. Ltd. was founded in Leigh in 1872. The company was very successful. It was bought in 1955 by David Brown Tractors Ltd. of Meltham, Huddersfield. Under this new ownership, it became the third largest tractor manufacturer in Britain. In 1979, David Brown was bought by Tenneco Inc. of Houston, Texas. Harris, McGregor ultimately became Case. Production declined, however, and the company closed down in 1988.