Trexler Library's archive holds thousands of original photographs depicting Muhlenberg College and its students, faculty, and administration throughout the late-19th and 20th centuries. These images are part of the Muhlenberg College Collection. The majority of the photographs were taken by the Public Relations department and were used in the Ciarla, Muhlenberg's yearbook, as well as in the alumni magazine and other outlets. Over 2,500 photographs have been digitized and are being added to the digital archive regularly.