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Lothrop, Lee & Shepard
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Louis Carrier & Company
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Lovat Dickson
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Lugus
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Lupton-The Archmchair Library
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M.A. Donohue
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M.L. Jewell
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M.L. Katzman
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M.M. Croft
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Macaulay
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MacEachern
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Mackenzie
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MacLean
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Maclean, Roger & Company
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MacLean's
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Maclear
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Macmillan
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Macrae-Smith
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Maidstone Mirror
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Manitoba Department of Agriculture & Immigration
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Manitoba Free Press
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Manitoba Text Book Bureau
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Manning & Rabbitts
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Maple Leaf Milling Company
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Margent
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