1. Trackline map of multichannel data collected in May 1977 off of the Washington/Oregon coast [cartographic material] Yale Public content 1984. 2023-08-08T18:55:01Z. 2023-08-09T03:02:37Z. Mann, Dennis M., author. U.S. Geological Survey. English. cartographic image. Public. Washington (State), Oregon, and Oregon.