Osterbrock, Donald E.
Pauper & prince : Ritchey, Hale & big American telescopes / Donald E. Osterbrock.
Ritchey, G. W. (George Willis), b. 1864.
Hale, George Ellery, 1868-1938
Astronomy -- United States -- History.
Telescopes -- Design and construction -- History.
Astronomers -- United States -- Biography.
Pauper and prince.