Discovered by Luther S. Cressman in 1938, this approximately 9,000 years old sandal from Fort Rock Cave is an important piece of the prehistory of Oregon Indians.  Cressman (1897-1994) was a pioneering field archaeologist at the University of Oregon.  He recovered about 75 sandals made from sagebrush bark cords from Fort Rock Cave along with other artefacts that suggest human occupation 12,000-10,000 years ago. Additional Fort Rock-style sandals have been recovered from Cougar Mountain and Catlow caves and these have been directly dated to 10,500-9300 years old.

http://www.uoregon.edu/~connolly/FRsandals.htm

A nice companion to the website above is Luther Cressman’s little book “The Sandal and the Cave”, ISBN 0-87071-059-1, Oregon State University Press.