271. Sectional aeronautical chart. Scale 10 m.=1.3 in., scale 1:500,000. Mt. Shasta (U-1). lat. 40°-42°, long. 120°-125°. Bookmark Corporate/Agency Authors: Coast and Geodetic Survey and Commerce Dept. Publisher: Coast and Geodetic Survey Date: Sept. 16, 1949 SuDoc number: C 4.9/4:M 863s/949-2