There are more than 900 collections at the Field Museum of Natural History for the Chicago Region, 1926—1993. Collectors include M. C. B. Stifler, A. E. Edgecombe, V. O. Graham, F. B. Lukas, P. Ponce de León, and R. Singer.

Verne Ovid Graham

Verne Ovid Graham worked in the region and published two works. His 59 collections at The Field Museum date from 1940 to 1947. There are at least 27 of his other collections online at Mycoportal.org from six herbaria. Some of these are from the Chicago area. Graham produced two works for the Midwest.

Rolf Singer

Read about Rolf Singer (1906-1994) [Field Museum].

Patricio Ponce de León

Patricio Ponce de León (1919-2010) [Wikipedia].