Miller, M., & Baetjer, H. H. (1952). Birthday luncheon: The Baltimore and Ohio Railroad Company. Marking its charter by the Lesiglature of the State of Maryland and the issuance of a commemorative stamp by the United States Post Office Department, February, 28, 1952, Sheraton Belvedere Hote. [Baltimore].

Miller, Michael., and Harold H. Baetjer. Birthday Luncheon: The Baltimore and Ohio Railroad Company. Marking Its Charter By the Lesiglature of the State of Maryland and the Issuance of a Commemorative Stamp By the United States Post Office Department, February, 28, 1952, Sheraton Belvedere Hote. [Baltimore], 1952.

Miller, Michael., and Harold H. Baetjer. Birthday Luncheon: The Baltimore and Ohio Railroad Company. Marking Its Charter By the Lesiglature of the State of Maryland and the Issuance of a Commemorative Stamp By the United States Post Office Department, February, 28, 1952, Sheraton Belvedere Hote. [Baltimore], 1952.