Liberty (Kittitas) -- 113 miles 2h06m
not quite a ghost town. tunnels digs gold mining. east on I-90 past Cle Elum
This old town is located 15 miles northeast of Cle Elum, two miles east of the main road along Boulder Creek. A fascinating gold mining town with 30 folks remaining in 1990.
http://www.ghosttowns.com/states/wa/liberty.html
Perhaps at 47.250092, -120.675079
Liberty up US 97 just east of Cle Elum.