Edna Holmwood books & textbook
Horseless Carriage Gazette, vol. 18, no. 6 (November-December 1956): "Ferdinand Porsche: His Life & Work," etc.
Horseless Carriage Club of America Floyd Clymer Willard C. Poole Jr. Edna Holmwood Virginia Barnett Julian Goodell Herb Prentice Albert J. Dunkel Louis Cook Sam DeBolt Bill Lawrence Louis Cook Byron Dugdale Fred Hayward Ward Kimball Mike Roberts
Horseless Carriage Club of America /1956T Single Issue Magazine / 68 Pages
