Explorer, sailor, researcher, and lecturer (1874–1970) who made more than 30 expeditions to the Arctic. ALS signed “D. B. MacMillan,” one page, 7.25 x 10.5, personal letterhead, May 9, 1926. In full: “Under separate cover I am sending you a photograph and my book ‘Four Years in the White North.’ Had a wonderful time at your home as I did before and am grateful to you for the opportunity of meeting so many of your good friends.” In fine condition, with creasing to the top left corner, light toning, and a few spots of soiling. RRAuction COA.