2018 Junior Gold Notebook - Day 3
USBC certifies string pin bowling as independent competition effective August 1, 2023 : r/Bowling
Corner Pin Spare Shooting Bowling Tips
How to Identify Bowling Pin Formations Infographic
Bill Spigner joins 100,000-Pin Club at USBC Open Championships
USBC STRING PIN COMPETITION CERTIFIED!, AUG 2023 LAUNCH!!
Two USBC records recently broken
2023 August Issue by Bowling Industry Magazine - Issuu
String Pinsetter Research