The Yale Observatory Zone Catalog a series of star catalogs published by the Yale University Observatory for 1939 to 1983, containing around 400,000 records. A total of 25 catalogs were published, so all references to stars include both the catalog number and the star number.
See also Bright Star Catalogue Ida Barney Ellen Dorrit Hoffleit Frank Schlesinger
External links Integrated Yale Observatory Zone Catalogs