California Thoroughbred Breeders Association Library is open to the public and has official charts detailing the performance of every horse in every race for thoroughbreds run on the North American continent for the last 100 years; breeding and racing records of every thoroughbred produced in Great Britain and America for over 200 years; extensive, but incomplete, records from Australia, France, Chile and others.

https://arcadiahistory.andornot.com/en/permalink/newspaper1927