This primary source comes from the Records of the Public Buildings Service.
Full Citation: 'Rural Delivery' and 'Battle of Trenton,' Trenton, NJ Post Office Murals by Charles Ward; 1935 - 1943; Treasury Relief Art Project: Missouri, New Mexico, New Jersey, New York; Completed Murals and Sculptures in United States Post Offices and other Federal Buildings, 1935 - 1943; Records of the Public Buildings Service, Record Group 121; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/rural-delivery-and-battle-of-trenton-trenton-nj-post-office-murals, May 3, 2024]