Books by H. L. Alden:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Alden, H. L. (Harold Lee), 1890-: Observations of long period variable stars at the Leander McCormick Observatory. (University of Virginia, 1917) (page images at HathiTrust)- Alden, H. L. (Harold Lee), 1890-: Parallaxes of 260 stars derived from photographs made at the Leander McCormick observatory (Columbia university press, 1920), also by S. A. Mitchell, Charles P. Olivier, and University of Virginia. Leander McCormick Observatory (page images at HathiTrust)
Find more by H. L. Alden at your library, or elsewhere.