"Indianapolis Police Ride Rambler Bicycles, C. Koehring and Brothers" panoramic photograph, Rare Books and Manuscripts, Indiana State Library
"Indianapolis Police Ride Rambler Bicycles, C. Koehring and Brothers" panoramic photograph, Rare Books and Manuscripts, Indiana State Library https://archives.isl.lib.in.us//repositories/2/resources/5971 Accessed April 29, 2025.
