Report for the year 1883-4 presented by the Board of Managers of the Observatory to the President and Fellows of Yale College. ([S.l. : s.n., 1884)
Keywords: Yale University. -- Observatory; Planetaria i obserwatoria astronomiczne -- Stany Zjednoczone -- 19 w; New Haven (Stany Zjednoczone, Connecticut) -- nauka -- 19 w; Sprawozdania