A long covered bridge over the Merrimack.

A long covered bridge over the Merrimack.

North bridge and statue of the "Minute Man" on old battleground, Concord, Mass.

Concord and Lexington bridge.

Pulpit rocks and bridge, Pigeon Cove.

Annisquam and bridge.

Iron bridge.

Water works, Newton, Mass.

Water works, Newton, Mass.

Water works, Newton, Mass.

B.W.W. div. 1, sec A, Winter Street bridges and conduit below Dam I, and excavation for river wall, July 14, 1877.

Boston water works, Sudbury River Conduit, 1876, Section 10, Waban Valley bridge, view of centering "arch B".

Boston Water works, Sudbury River Conduit, Nov. 6, 1876, south end of wooden dam on Sudbury River showing R.R. bridge and small bridge used for taking experiments with current water.

The Public Garden.

Bridge, Public Gardens, Boston.

Bridge on Public Garden.

View in Public Garden.

Garrett Bridge, Druid Hill Park.

Druid Hill Park, Baltimore.

Druid Hill Park, Baltimore.

Bridge over Kaw river.

View of a bridge at Beloit.

Atchison bridge.

Union Pacific Railroad bridge to Omaha.

Waterloo bridge.

View on the Maquoketa River.

View of Muscatine, looking South.

Clinton Bridge, draw closed.

Illinois Central R.R. bridge, La Salle, Ill.

Jacksonville: a covered bridge.