New Magnetic Observatory at Sitka, Alaska
Patterson-New-Magnetic-Obs-Sitka.pdf
(765.46 KB)
Detailed Description
New Magnetic Observatory at Sitka, Alaska by Wm. D. Patterson, vol 46, no 1, UNITED STATES COAST AND GEODETIC SURVEY SHIP Pioneer, Oakland, California, January 15, 1941.
Sources/Usage
Public Domain.