An envelope of a letter sent by Nova Scotia artist Maud Lewis to John Kinnear of London, Ont., in 1967. The pair corresponded for five years, with Kinnear often sending Lewis art supplies.

Six letters that a London, Ont., man received from Nova Scotia artist Maud Lewis after he began writing her in 1965 are up for auction, and his daughter says they're a testament to her late father's love of art and desire to help others in need.