Browse Items (11 total) Tags: Robert Mueller Browse All Browse by Tag Search Items Previous Page of 2 Sort by: Title Creator Date Added Robert Mueller These are the glass negatives of Robert Mueller. The photos were taken by Charles Wasson of Wasson Studios in Decatur, IL in the early 1900s. Tags: c. 1910, Charles Wasson, Charles Wasson Photo Collection, Decatur IL, Glass Negative, man, negative, Robert Mueller, Wasson Studios Previous Page of 2