Chase - Van Schaack Correspondence (1945–1962) & A.S. Hitchcock - G.T. Moore (2 letters), bulk: 1945–1962, 1 March 1920, 22 March 1920, https://huntbot.org/hibdarc/collections/116/116_Van%20Schaack_Bx1FF1_r.pdf. Hunt Institute for Botanical Documentation Archives. https://as.huntbot.org/repositories/2/digital_objects/4426 Accessed June 18, 2026.