1907 MAXIM-GOODRIDGE Electric Maxim’s Electric article Maxim-Goodridge Hartford, CONN MOTOR AGE Motor Car Development 8.5″x12″ page 28

MAXIM & GOODRIDGE Hartford, CONN 1908-1909 THE NEW ENCYLOPEDIA OF MOTORCARS 1885 to the Present Edited by G. N. Georgano E. P. Dutton New York 1982 ISBN: 0-525-93254-2 8.25″x11″ page 373

MAXIM-GOODRIDGE Electric Hartford, Connecticut 1908 Standard Catalog of AMERICAN CARS 1805-1942 By Beverly Rae Kimes & Henry Austin Clark, Jr. Krause Publications ISBN: 0-87341-428-4 8.5″x11″ page 939