This collection highlights the lives and careers of brothers and Lowell Observatory astronomers V.M. and E.C. Slipher.
"Three Decades of V.M. Slipher - Edwin Hubble Correspondence." Article in HAD News (The Newsletter of the Historical Astronomy Division of the American Astronomical Society), Number 95, May 2020
Arizona Legislature Resolution on the Death of Earl Carl Slipher, 1965
Various documents pertaining to the Northern Arizona Furniture Company. V.M. Slipher was the company's President in 1930.