...this photocopy depicts the footprints of all structures at Boston's Charlestown Navy Yard; it also usually indicates use and building number; other information depicted includes railroad tracts, crane tracts, hydrants, capstans, street lights, fire alarms, floodlights, Circuit Breaker House and flush hydrants; at some later date someone has annotated the map and assigned priorities to certain buildings/areas presumably for future development uses; this item was in the BRA collection...