The Mount Wilson Observatory, with its 100-inch telescope, and the Mount Palomar Observatory, with its 200-inch instrument, are monuments to the scientific leadership of George Ellery Hale (18681938). So central were his efforts and influence in the founding, funding, and building of these great facilities that they were jointly renamed the Hale Observatories in 1970. But, as this book documents, these and other astronomical instruments are only the...