William Chauvenet A manual of spherical and practical astronomy […]. I+II. Vol I: Spherical Astronomy. Vol II: Theory and use of astronomical instruments. Philadelphia: J. B. Lippincott, 1891. 708 + 632 pp + folded plates. Publishers blue cloth. Vol II slightly cracked in inner front hinge, still solid. + A.S. Eddington Stellar movements and the structure of the universe. London: MacMillan and Co., 1914. xii, 266,  pp. Publishers blue cloth. + Forest Ray Moulton An introduction to celestial mechanics. New edition. New York: MacMillan, 1914. Second edition. xvi, 437,  pp. Publishers red cloth. Spine sunned. + FOLDER with 22 cardboard plates (20x14cm), published by Société Astronomique de France, app. 1910-1925. PROVENANCE: Dr. Philos. Hans Henie (1887-1950).