1911 ca. NATIONAL driver Len Zengle photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Fairmount Park Races National team Johnny Aitken, Sidney the Pig, Don Herr photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Fairmount Park Races National team Sidney the Pig, unknown guy, Don Herr photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Fairmount Park Races National team Sidney the Pig, unknown guy, Don Herr photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Fairmount Park Races National team unknown guy Johnny Aitken, Sidney the Pig, Don Herr photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Fairmount Park Races standing behind wheel Louis Disbrow at wheel Don Herr passenger Johnny Aitken photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Jacksonville Races Driver and officials with National racecar photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Jacksonville Races Five National racecars lined up in front of fence photo Burton Historical Collection Detroit Public Library

1911 NATIONAL Len Zengle at Fairmount Park Races photo Burton Historical Collection Detroit Public Library