Hanthorn Cannery was built partially on a substantial rock that is the purported location for the wreckage of the Silvie de Grasse, a 2,000-ton packet that typically ran between New York and le Havre, France. In 1849, loaded with lumber bound for San Francisco, she ran upon this rock and split. For 18 years part of her hull and her figurehead were visible above the water. In 1867, much of the wreck was salvaged. This was the first major shipwreck on the lower Columbia River.