Wikipedia contributors. (2025, November 3). Glacial erratic boulders of King County, Washington. In Wikipedia, The Free Encyclopedia. Retrieved 00:19, December 3, 2025, from https://en.wikipedia.org/w/index.php?title=Glacial_erratic_boulders_of_King_County,_Washington&oldid=1320247183
The tree of liberty must be refreshed from time to time with the blood of patriots and tyrants. Thomas Jefferson letter to William Stephens Smith (13 November 1787).
Glacial erratic boulders of King County, Washington (Wikipedia) Glacial erratic boulders of King County are large glacial erratic boulders of rock which were moved into King County, Washington by glacial action during previous ice ages.