Positions of the principal Stars derived from observations made at the U. S. Naval Observatory at Washington, by Prof. M. Yarnall in the years 1853 to 1860
F. M. Yarnall, A. Hall. "Positions of the principal Stars derived from observations made at the U. S. Naval Observatory at Washington, by Prof. M. Yarnall in the years 1853 to 1860." Astronomical Notes - Astronomische Nachrichten 82.3 (1873) 44-48