Orrery patented 1897 (No.578,108 USA) and 1910 (No.958,139 USA) by Alexander Laing and manufactured by Laing Planetarium Company, Detroit, Michigan. Orrery planetary model by the Laing Planetarium Company, 1910-1920 Astronomy 1910-1920
Patent model of improved orrery by John G. Moore of Philadelphia, US Patent 51072 dated 21st November 1865, with original tag. Patent model of orrery planetary mechanism, 1865 Astronomy 1865
Large orrery on pedestal base with with gilded horse head decorations beneath the calendar ring and glazed cover, original maker unknown, enlarged by Thomas Wright, Fleet Street, London, 1733. Inscribed 'All the Machinery of this instrument was made new in 1733 by Tho Wright Instrument maker to His MAJESTY GEORGE II'. George II's Grand Orrery King George III 1733
Volume entitled: "The Description and Use of a Terrestrial Planetarium, including the Orbits of Mercury and Venus commonly called an Orrery"
