Image Description from historic lecture booklet: "The Australians claim Sydney to be the finest harbor of the world. Its entrance is The Heads, a natural gateway about a mile wide guarded by gigantic rocks as high as the highest church steeple, so protecting the shipping that, no matter how stormy the ocean outside, there are quiet waters within. The harbor is so deep that the largest ocean steamers can sail close up to the land, and its coast line is so long that all the ships of all the world could anchor here and have room to spare."
Dock is found near the Yaquina Oyster Laboratory. Photo was used in "A progress report of investigations fo the native oyster in Yaquina Bay, Oregon" by R. E. Dimick and Jay Long, written in 1939 (Figure 10)