1. A. W. Brøgger, “Ham som gav oss sydpollandet,” Verden i Bilder 1 (April 1939), 1–7.
2. Max Jones, The last great quest, Captain Scott’s Antarctic sacrifice (Oxford: Oxford University Press, 2003), 24.
3. The commemorative biography by Hans Bogen, 70 år: Lars Christensen og hans samtid (Oslo: Johan Grundt Tanum, 1955), has a wealth of personal information from the early years of Lars Christensen’s life, and appears to have been the first half of a planned two-volume work.
4. Nicolay Nicolaysen, Langskipet fra Gokstad (Sandefjord: Stiftelsen Norsk senter for jernalderog middelalderhåndverk, 2003 [first published 1882]).
5. Mark Rosenthal, Carol Tauber, and Edward Uhlir, The ark in the park: the story of the Lincoln Park Zoo (Urbana: University of Illinois Press, 2003), 69.