Agricultural Implements and Machines in the Collection of the National Museum of History and Technology / Smithsonian Studies in History and Technology, No. 17

by John T. Schlebecker

Hayfork, [34], [146], [147], [152], [168]

Headers, Gallic, [13], [171]

Hepp, Frank, donor, [25]

Herbicide, [359]

Heiss, E. W., donor, [34]-[36]

Heiss, John, [34]

Heiss, William, [35], [36]

Hill, James, [332]

Hitchcock, Walter A., donor, [221], [222]

Hoe(s), [24], [128], [150], [158], [206], [210], [215], [232], [238], [263]