Waldorf Main Street, Booster Days. Material: paper. Size: 4 1/4" W. x 5 1/2" L. Description: Series of Postcards of 1998 Waldorf (#90.98.1-14); white cardstock - black and white photograph on one side and printing on reverse - subject: Waldorf Main Street with people in street - reverse side: photo description: "Waldorf, Minnesota Memories Series #15, 1940s Photo Main Street, East Side Booster Days Celebration & Parade" (see history below) and printed at bottom: "Graphic Design & Office Services (507) 239-2410".