Robertson, William H. P. 1920- The history of thoroughbred racing in America [electronic resource] / [by] William H.P. Robertson.. — Englewood Cliffs, N.J., : Prentice-Hall, [1964]. — 621 p. : illus., ports. Bibliography: p. x-xi. LCCN: 64017364 Subjects--Topical Terms: Horse racing--History.--United States LC Class. No.: SF335.U5 / R6 Q798.4 R Dewey Class. No.: 798.4