Collier's New Encyclopedia (1921)/Harvard Observatory

HARVARD OBSERVATORY, in Cambridge, Mass., founded in 1843, equipped with a 15-inch Merz & Mahler equatorial in 1847, with an 8ΒΌ-inch Troughton & Simms meridian-circle in 1870, with various photometers by Professor Pickering since 1876, and with a large number and variety of photographic telescopes, a part of the largest of them being loaned to the observatory by Mrs. Henry Draper since 1835. It is the richest endowed and in some respects (especially photographically) the best equipped observatory in the world.