Mr. and Mrs. Marvin Johnson in Convertible, Centennial Grand Marshals 5" x 7" black and white photograph of the Grand Marshals of the Waseca Centennial Parade. Mr. and Mrs. Marvin Johnson are riding in a white convertible car with a decal signifing that the automobile is an official car for the Miss Minnesota Pageant. The car is at the corner of 10th Avenue and 3rd Street S.W. in Waseca.