Ackroyd 20296-1. "Port of Portland. aerials. Swan Island. November 11, 1977" (Caption published in Daily Journal of Commerce, November 11, 1977, pg. 1: "Full house at Swan Island drydocks. Port of Portland's Swan Island drydock and ship repair area reflect an increase in activity this fall, compared to last year. The three drydock (foreground) bays are occupied as ar four repair berths o the left side. Earth-moving activity next to the drydock is for the fourth drydock in spring, 1978. In background is the skyline of downtown Portland."