Black and white lantern slide of the Tasquillo bridge.

Black and white lantern slide of the Cabin John Bridge, also known as the Union Arch Bridge, in Cabin John, Maryland.

Black and white lantern slide of heavily laden canal boats on the Grand Canal in Tientsin (Tianjin), China. Several large buildings are visible in the background.

Black and white lantern slide of the Grand Canal passing under a railway bridge near the Grand Canal Improvement Board office in Tientsin (Tianjin), China. Boat traffic passes under the bridge.

Black and white lantern slide of the Grand Canal passing under a railway bridge.

Black and white lantern slide of a railroad bridge taken from below.

Black and white lantern slide of a railroad bridge crossing the Yellow River in China.

Black and white lantern slide of a railroad bridge entrance. A sign on top of the bridge reads "Erbaut 1909-1912, Maschinenfabrik Augsburg-Nurnberg A.C. Werk Gustavsberg."

Black and white lantern slide of a group of soldiers standing on top of a stone bridge in China looking down at an overturned cart on the path below.

Black and white lantern slide of a stone bridge with three arches crossing a river in China. A crowd of people and several wagons are visible aross the bridge, with a few on the bank of the river below.

Black and white photograph of a Lena Merrill standing next to a river with bridges and buildings visible in the background.

Black and white photograph of a Chinese man standing next to a tide gauge house and pier. Another person is visible standing on top of the pier. Photograph was taken by Robert Merrill in the Chinese coastal resort area of Beidaihe Qu.