Revision History for U.S. Geological Survey Scientific Investigations Map 3406 Geomorphic Map of Western Whatcom County, Washington By Dori J. Kovanen, Ralph A. Haugerud, and Don J. Easterbrook ----------------------------------------------------- First posted online August 10, 2020 ----------------------------------------------------- Revised and reposted November, 2021, as version 1.1: On page 10 of the pamphlet, in the figure 7 caption, the age of the peak of phase 1 of the Vashon stade was corrected to “~16,000 calendar years before present” (it originally had been reported [incorrectly] as “~17,000 calendar years before present”).