New General Catalogue of Nebulae and Clusters of Stars (1888), Index Catalogue (1895), Second Index Catalogue (1908)
London: Royal Astronomical Society, 1953. Reprint, Royal 8vo, pp. (iv) 378, minor foxing endpapers and top edge, papered boards, edges and spine yellowed, light foxing front, chips head and tail spine, good condition. Memoirs of the Royal Astronomical Society.