Sources for Information on the Race Tracks/Venues pages:
Allan Brown's book "The History of America's Speedway Past and Present", Website - www.MotorsportMemorial.org, Dick Wallen’s book “United States Auto Club Fifty Years of Speed and Glory”,
Dick Wallen’s book “Board Track - Guts, Gold and Glory, Kevin Eckert’s www.OpenWheelTimes.com, back issues of National Speed Sport News, various Race Programs, Cincinnati Enquirer & Kentucky Post Newspaper articles & Internet searches.