Sailors on land--agile construction workers on a suspended iron section, 200 feet above ground, New York City

Little Negro tea pickers singing pickaninny songs for President Roosevelt, Pinehurst Tea Farm, Summerville, S.C.

Little Negro tea pickers singing pickaninny songs for President Roosevelt, Pinehurst Tea Farm, Summerville, S.C.

Little Negro tea pickers singing pickaninny songs for President Roosevelt, Pinehurst Tea Farm, Summerville, S.C.

Little Negro tea pickers singing pickaninny songs for President Roosevelt, Pinehurst Tea Farm, Summerville, S.C.

President Roosevelt running an American steam-shovel at Culebra Cut, Panama Canal

President Roosevelt running an American steam-shovel at Culebra Cut, Panama Canal

President Roosevelt discussing America's task with workmen at Bas Obispo, Panama Canal

Spanish laborers at work in Culebra Cut and loaded train hauling dirt from canal

The delicious product of Irapuata, where strawberries ripen every day in the year, Mexico

One to do the work ... [African American men chopping wood at the side of the road.]

Solar Method of Evaporating Salt Brine -- Collecting, Draining, Hauling Sault, Syracuse, N.Y.

Beds of lettuce, young man with wheel hoe, girls with common hoes, near Buffalo, N.Y., U.S.A.

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Sept. 13, 1876. View showing interior structure of Charles River Bridge over arches "F" & "G".

Sudbury River Conduit, B.W.W., div. 4, sec. 15, Sept. 13, 1876. View showing interior structure of Charles River Bridge over arches "F" & "G".