Performs a variety of sales and customer support services for products including stamps, stamped paper, postal cards, philatelic products, and special promotional items; with or without direct supervision.
Siskiyou Pass. Siskiyou Pass, including the 4,310-foot-high Siskiyou Summit of I-5 that is located a short distance east of the original historic pass, is the highest and most historically significant mountain crossing on the main transportation route that links California and Oregon.
Notes. 1  The summit of Mount Whitney is the highest point of the Sierra Nevada, the State of California, and the contiguous United States. 2  The summit of Mount Elbert is the highest point of the Front Range and the Continental Divide of North America.