Charles Robertson Papers (Digital Surrogates) | University of Illinois Archives
Digital Surrogates from the papers of Charles Robertson (1858-1935) including correspondence, a list of species collected, a list of bees described by Robertson, two bound volumes containing all of Robertson's publications, and his specimen collection log books. The log books document insect specimens collected by Charles Robertson. Recorded information includes specimen number, scientific name of specimen, sex of specimen, date of collection, locality, insect order, host plant scientific name, and notes.
The logs are also available at the Biodiversity Heritage Library: https://www.biodiversitylibrary.org/bibliography/150283#/summary and the Internet Archive: https://archive.org/search?query=Specimen%20collection%20logs%20of%20Charles%20Robertson%201884-1918.
A preservation copy of all files, available only to archives and digital preservation staff members, is stored in the Univesity's Digital Repository: https://medusa.library.illinois.edu/bit_level_file_groups/5967.