1915 Indy 500
1915 5 19 Getting Ready for the International Sweepstakes By Jerome T. Shaw THE HORSELESS AGE
1915 5 23 New York THE SUN newspaper Indy 500
1915 5 26 Indy 500 22 Cars Qualify for Indianapolis 500-Mile Sweepstakes MOTOR WORLD
1915 5 26 Indy 500 Characteristics of Entries From the Foreign Field MOTOR WORLD
1915 5 26 Indy 500 Valve-in-the-head Motor Supreme in List of Entries MOTOR WORLD
1915 5 27 Valve-in-Head Motor Supreme THE AUTOMOBILE
1915 6 2 World's Records Made in 500-Mile Sweepstakes THE HORSELESS AGE
1915 6 3 Indy 500 De Palma, in Mercedes, Wins at 89.84 m.p.h. THE AUTOMOBILE
1915 6 3 Indy 500 Lap-by-Lap Story of Ralph dePalma's Spectacular Victory -- How the 500-MileClassic Was Run and Won By Harry A. Tarantous MOTOR AGE
1915 6 3 Indy 500 Mechanical Lessons Taught in Record-Breaking Contest by Darwin S. Hatch MOTOR AGE
1915 6 3 Ralph De Palma Wins Indianapolis Classic in Record Time By J. C. Burton MOTOR AGE
1915 Indy 500 Full Account SEARS, ROEBUCK & CO Catalog
1915 Set of SPEEDWAY DRIVER postcards
1915 5 27 Steel and Nerve at the Indianapolis Oval article Leslie’s Illustrated Weekly Newspaper 10.25×15 page 512
1915 6 3 Indy 500 500-Mile Races Echos from the Resonant Saucer of Speed article MOTOR AGE 8.75″×11.75″ page 11
1915 Indy 500 BURMAN-PEUGEOT RPPC screenshot
1915 Indy 500 Earl Cooper STUTZ RPPC screenshot
1915 Indy 500 O’Donnell DUESENBURG RPPC screenshot
1915 Indy 500 Ralph DePalma MERCEDES RPPC screenshot
1915 SPEEDWAY STUTZ Earl Cooper RPPC screenshot