Learn, share ideas, and participate in the historic and prehistoric archaeology of the culturally rich Pacific Northwest.A non-profit organization founded in 1951, OAS stresses the importance of working with professional archaeologists in the advancement of knowledge and educating the public.

OAS Archaeology Training

OAS Archaeology Training

Learn about Pacific NW archaeology, get trained to work in the field with professional archaeologists. OAS Basic Training will give you the knowledge you will need to work as a volunteer on archaeology projects in the Pacific Northwest.

NEW from the OAS Press

NEW from the OAS Press

Carved high above the Milk River in southern Alberta is a first-person record of Plains Indian warfare spanning the period from A.D. 1600 through 1870. The authors make a full record of this site, including a chronology that is one of the most detailed for any Plains site.

Upcoming Events

Upcoming Events

OAS General Meeting Schedule, Field Trips, Volunteer Opportunities, Classes

What’s New

The next OAS General Meeting is May 7 at 7 p.m.

Special guest lecturer David Kaiser, speaking on

“War Honors Revealed–
DStretch Analysis of The Deadmond Bison Robe”

David Kaiser will be presenting LIVE at OMSI.
The lecture will be available on Zoom for OAS members.

Learn more about this talk and
the entire free public lecture series here>>

If you missed a lecture, all our presentations are available on our YouTube Channel here>>

For information on upcoming Portland area events and lectures, click here>>

Join OAS by visiting our membership page here>>

Links to local museums, National and State Parks, Universities, and resources for teachers here>>

Looking for information on OAS sponsored scholarships and grants? Click here

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