The Malcolm O. Sillars photograph collection 48 black-and-white and color photographs and negatives. The collection primarily contains images relating to Sillars' research into the history of American speeches and public addresses and public signs and road signs in the United States between approximately 1980 and 2000. The collection also contains 17 color photographs sent to Sillars by S.J. Sackett of a production of a play in Hays, Kansas around 1975.