Notebooks and pamphlets, 1917-1969 , regarding birds in China by Axel M. Hemmingsen; also other subjects by Dr. Ernest Hartert (in German); also "Migration Notes" by Wilder, 1917-1969

Notebooks and pamphlets, 1917-1969 , regarding birds in China by Axel M. Hemmingsen; also other subjects by Dr. Ernest Hartert (in German); also "Migration Notes" by Wilder, 1917-1969, Box: 1, Folder: 1. George Durand Wilder papers, 3241. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/407353 Accessed December 26, 2025.