TUGBOAT HERCULES: HISTORIC STRUCTURE REPORT. Prepared by Tri-Coastal Marine, San Francisco, and Published by The San Francisco Maritime National Historical Park, San Francisco, 1990.

Softcovers, 8.5x11 inches, 116 pages. Illustrated throughout with photographs and drawings, plus 5 fold-open schematic drawings.

GOOD condition, some wear to the spine ends and a few scrapes to the front spine fold, otherwise tight, bright, clean, clear and unmarked. A solid, nice copy.

A report on the history of the Tugboat Hercules and recommendations for its rehabilitation.