Every July the Pennsylvania Pump Primers holds their annual muster in Harrisburg along the banks of the Susquehanna River in Riverfront Park. Over the years the muster has drawn an average of 100 pieces of antique apparatus that participate in activities including static display and active drafting and pumping from the river. The muster also features an extensive flea market and fire-related contests and games.
The Pennsylvania Pump Primers Association is an organization of antique fire apparatus enthusiasts, many of whom own, drive, maintain and improve their own fire trucks and related vehicles and equipment.
A parate of around 100 antique fire trucks from the Farm Show Comples witll orpen the muster.