1916 4 13 HUDSON Hudson Covers Mile at 1025 MPH THE AUTOMOBILE 9×12 AACA Library page 703
1916 4 20 HUDSON The FORUM Using Two Gear Ratios for Official Tests By EH Delling THE AUTOMOBILE 9×12 AACA Library page 727
1916 4 20 HUDSON Two pictures of Ralph Mulford and Hudson Super Six MOTOR AGE 9″x12″ AACA Library page 33