Wallace's Year-Book of Trotting and Pacing in 1917, Vol. 33: Containing Full Summaries of All Trotting and Facing Performances of the Year, in Which Any Heat Was Trotted in 2: 30 Or Better, Or Paced in 2: 25 Or Better, Carefully Compiled from the Official

Wallace's Year-Book of Trotting and Pacing emerged as the definitive annual record for the burgeoning American harness racing industry during the late 19th and early 20th centuries. Compiled by the American Trotting Register Association, the publication was designed to provide horse breeders, owners, and racing enthusiasts with comprehensive statistical data regarding performance times. This specific 1917 edition was created to document the rigorous standards of the sport, capturing the historical shift toward speed and precision that characterized the era's competitive trotting circuit.

The editorial intent behind the series was to maintain an authoritative ledger that ensured consistency in the registration of horse pedigrees and performance records. By meticulously cataloging every heat that met the specific time requirements of the American Trotting Register, the volume functioned as a vital reference tool for the industry's genealogical and athletic standards. It is regarded today as a primary historical source for researchers studying the history of equestrian sports and the evolution of the Standardbred horse breed in North America.