Typical costs: First, test to see if the popcorn texture contains asbestos. Wet several spots with water and scrape small samples of the material into resealable plastic baggies, then submit them to a lab. Lab tests typically cost $10-$60, depending on the lab and how long it takes to get the results.
Fort Clatsop. From FortWiki. Fort Clatsop (1805-1806) - This fort was the first military establishment to be built in Oregon. It served Lewis and Clark and the 33-member Corps of Discovery as winter quarters in 1805-06 as seven cabins surrounded by a 50 ft square log stockade.
Post at Mullaly's Ranch Station | Fort Niobrara | Post on the North Fork Loup River. Post at North Platte Station | O'Fallon's Bluffs Post | Plum Creek Post. Post (Camp) at Red Cloud Agency | Camp Red Willow | Robidoux Pass Trading Posts. Camp Robinson | Fort Robinson | Camp Ruggles | Camp Sargent | Camp Sergeant.