Philadelphia's Rapid Transit: Construction and Equipment of the Market Street Subway and Elevated provides a fascinating historical look at one of the nation's earliest municipal railway systems. Originally printed in 1908 and reprinted by Periscope Film, this softcover book includes descriptive text and dozens of rare black-and-white photographs documenting the men and machinery that built the line. It offers technical details on the subway roadbed, elevated structures, and passenger cars, making it an essential resource for transit enthusiasts and historians interested in Pennsylvania transportation history.