1912 1 27 PRATT 1912 Pratt – Forty Starts From Seat 40 Horse Power Elkhart Carriage & Harness Mfg. Co. Elkhart, Indiana THE SATURDAY EVENING POST January 27, 1912 page 52

1913 2 1 PRATT PRATT “50” Long Stroke Motor 1913 Pratt Cars Elkhart Carriage & Harness Mfg. Co. Elkhart, Indiana February 1, 1913 page 33

1913 2 1 PRATT PRATT “50” Long Stroke Motor 1913 Pratt Cars Elkhart Carriage & Harness Mfg. Co. Elkhart, Indiana THE SATURDAY EVENING POST February 1, 1913 page 45

PRATT Elkhart Carriage & Harness Mfg. Co. Elkhart, Indiana ENCYCLOPEDIA OF MOTOR CARS 1885 to the Present Edited by G.N. Georgano page 502

PRATT Elkhart Carriage & Harness Mfg. Co. Elkhart, Indiana Standard Catalog of American Cars pages 1240 & 1241