Star catalog : positions and proper motions of 258,997 stars for the epoch and equinox of 1950.0.
prepared by the staff [of the] Smithsonian Astrophysical Observatory.
Washington, D. C. : Smithsonian Institution [for sale by the Superintendent of Documents, U.S. Govt. Print. Off.], 1966.
4 vols. : ilustraciones ; 27 cm.
Serie: Smithsonian publication ; 4652
"Sources for the catalog": v. 1, p. xx-xxiv.