Duncan, John C.
Astronomical Society of the Pacific 1951, Carl O. Lampland's Obituary, by John C. Duncan in Publications of the Astronomical Society of the Pacific, 1952
Roosevelt, F.D., Franklin D. Roosevelt
Acting Secretary of the Navy Franklin D. Roosevelt's reply to a request by Senator Ashurst at Carl Lampland's behest for a copy of the American Practical Navigator, March 19, 1919, 1919-03-19
Acting Secretary of the Navy Franklin D. Roosevelt's reply to a request by Senator Ashurst at COL's behest for a copy of the American Practical…
Kevin Schindler
Astronomy Magazine, Blink Comparator
"Want to discover Planet X? You'll need these three tools"
Article in Astronomy Magazine by Kevin Schindler, May 20, 2015, 2015-05-20
In 1911 Lampland suggests the purchase of a Zeiss Blink Comparator to aid in the search for Planet X.