A watchman, Ernest Smith, at the Central Avenue railroad crossing in Canonsburg, PA, reported that 115 trains (passenger, coal, and general-freight), had crossed on a Thursday in April, 1902 on the Chartiers branch. That is a lot of traffic for a "simple" branch line! The pages linked to below provide all the prototype information about the equipment I have documented so far. Since I model 1924, diesel engines are not covered here. The steam engines that are listed here are the ones that have been reported being used on the Chartiers branch. Steam engines started being phased out around 1948 and were completely replaced by diesel locomotives (mostly switcher-styles) by 1953, according to people who lived in the area.