Public domain photos

The image shows an old book with a drawing of a trestle bridge on it. The bridge is composed of several towers connected by a series of cables, and the paper has text written on it, likely describing the structure of the bridge.

The image shows an old book with a drawing of a trestle bridge on it. The bridge is composed of several towers connected by a series of cables, and the paper has text written on it, likely describing the structure of the bridge.Open in library