3/15/2009, 1:00 p.m. PDT
The Associated Press

PORTLAND, Ore. (AP) - Oregon surveyors are celebrating National Surveyor's Week by cleaning up and improving the Willamette Stone State Heritage Site in the west hills of Portland.

The Willamette Stone was a small stone obelisk that marked the "initial point" of the Willamette Meridian. All land surveys and property descriptions in Oregon and Washington state are referenced to this point.

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