Unknown Correspondent postcard to the University of Nebraska Department of Botany, [11 November 1899?], Box: 5, Folder: 59. William Winfield Ray collection of 20th century botanists correspondence and other materials, HIBDARC-0048. Hunt Institute for Botanical Documentation Archives. https://as.huntbot.org/repositories/2/archival_objects/4518 Accessed March 20, 2026.