IRDC sponsored Ron Johnson Grand Prix, at Pacific raceways, Kent, Wa. Saturday and Sunday, May 16 and 17, 2015. Contains pictures taken both days.
IRDC was founded in 1970 and is the western Washington area member club of the International Conference of Sports Car Clubs (ICSCC).
http://www.irdc-racing.com Pictures are available as digital downloads. Downloads are licensed for personal and club use. For commercial use contact me.