1911 6 7 NATIONAL Denver Boy in National Won 200 Mile Race at Sable THE HORSELESS AGE 9″×12″ page 991
1911 6 7 Sport and Contests An Analysis of the Five Century Race By M. Worth Colwell THE HORSELESS AGE 9″×12″ page 987
1911 6 7 Sport and Contests An Analysis of the Five Century Race By M. Worth Colwell THE HORSELESS AGE 9″×12″ page 988