Overview Windmills Mailbox near Pelican Lake, Minn., May 2, 1972 H4 A27; Farming Waldo Hateldal filling drill hopper with fertilizer, 1972 H4 A28; Wet fields 5 miles SE of Great Bend, N.D., May 23, 1972 H4 A29; Birds Wren house on fence, Ray Ackerman built H4 A30; Mailboxes Covered wagon H4 A31; Arthur Link in Grand Forks, July 21, 1972 H4 A32; , Gordon & Glen Quonset barn being built, July 1972 H4 A33; Automobiles Antique cars, Ada, Minn., July 25, 1972 H4 A34; Automobiles Kid towing toy car...