May 10, 2017 was the 148th anniversary of the driving of the Golden Spike celebrating the completion of the transcontinental railroad in the United States. It was also the day the 146th and final edition of the Ringling Bros. and Barnum & Bailey Circus made its last movement by rail.

This list is a work-in-progress -- and probably always will be. Any additions or corrections, please email. RBBX numbers were fixed, but House Numbers and Units (Red or Blue) could change. Blue Unit was indicated by a large blue-colored globe graphic on the passenger-type car sides. In parenthesize are the House Numbers on the Blue Unit cars on May 8-10, 2017.