01 Lake Union USGS 1970s
USGS map from the 1970s shows Lake Union's shoreline before and after construction of the Lake Washington Ship Canal and other changes made since the 19th century. (USGS Archives)
USGS map from the 1970s shows Lake Union's shoreline before and after construction of the Lake Washington Ship Canal and other changes made since the 19th century. (USGS Archives)