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. Ownership of apparatus is not a requirement for belonging to the PPP only a strong interest in the heritage of the fire service. The PPP was founded in Harrisburg in 1975 and in the following year it became the Central Pennsylvania Chapter of the national organization the Society for the Preservation and Appreciation of Antique Motor Fire Apparatus in America. (SPAAMFAA) Each July the Pennsylvania Pump Primers holds a Show and Muster in Harrisburg PA. 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.