Thomas John "Tom" Thomson (August 5, 1877 – July 8, 1917) was an influential Canadian artist of the early 20th century. He directly influenced a group of Canadian painters that would come to be known as the Group of Seven, and though he died before they formally formed, he is sometimes incorrectly credited as being a member of the group itself. Thomson died under mysterious circumstances on Canoe Lake in Algonquin Park.

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