Ernest de K. Leffingwell papers: Articles by Leffingwell: "A Brief Account of the Baldwin-Ziegler Polar Expedition," in "The File Closer" (1903); "Camping Alone by the Polar Sea," in "Collier's Outdoor America"; "A Communication from Leffingwell," in "University of Chicago Magazine"; "My Polar Explorations, 1901-14," in "Explorer's Journal," October 1961, reference scans

Ernest de K. Leffingwell papers: Articles by Leffingwell: "A Brief Account of the Baldwin-Ziegler Polar Expedition," in "The File Closer" (1903); "Camping Alone by the Polar Sea," in "Collier's Outdoor America"; "A Communication from Leffingwell," in "University of Chicago Magazine"; "My Polar Explorations, 1901-14," in "Explorer's Journal," October 1961, reference scans, mss69_001041. Rauner Library Archives and Manuscripts. https://archives-manuscripts.dartmouth.edu/repositories/2/digital_objects/1695 Accessed March 27, 2025.