1919 12 25 NATIONAL Famous Old Engine Still Can Work MOTOR AGE 8.25″×11.25″ page 24
1920 ca. Chester S. Ricker stationary AUTOMOTIVE ENGINEERING TECHNICAL ADVERTISING ENGINEERING HANDBOOKS Indianapolis, IND U. S. A. 8.5″x11″ xerox Source: Walter Miller Auto Lit
1920 DUSENBERG Racing Engine 8-Cylinder In-Line 181.5 Cubic Inch 125 Horse Power at 4,200 RPM Indianapolis Motor Speedway Museum Indianapolis, Indiana Thursday April 13, 2006 Digital Photograph by Sam T. Test