Ambassador Bridge construction workers

On verso: Detroit-Windsor Bridge

Design for boulder bridge; grounds of Mr. James A. Allison

Red and black ink on linen. View from top, side and end elevations and cross-section with distances and grades. 111 cm. x 50 cm. Scale: 1/4" = 1'. Signed. [Marion College] [from photographic copy by Lance Burgharrdt]

Cow Crossing Bridge

Saline Valley Farms was an experiment in cooperative farming and living begun in 1932 by Harold S. Gray.

Bridge Across Saline River

Saline Valley Farms was an experiment in cooperative farming and living begun in 1932 by Harold S. Gray.

Paul Bunyan Bridge Builders spinning cable wires across the Straits of Mackinac

verso: #1342 10/10/56 Adjusting cable wires, top of south tower, after passing of spinning wheel

Wall St. Bridge

Collapsed Aug 6, '09

Estate of Julius Rosenwald, Esq....Plan for stone bridge.

Red, black ink on linen; general plan, floor plan, sections; details, measurements; signed; 95 x 60 cm.; Scale: 1/4" = 1' [from photographic copy by Lance Burgharrdt]