The earth and sky; a primer of astronomy for young readers (1898)
Holden, Edward Singleton, 1846-1914 · New York, D. Appleton & Company · leaf 126
Part of a photograph of the sun, taken at the Lick Observatory.A sun spot is shown close to the edge. 98 THE EARTH AND SKY. … Part of a photograph of the moon, taken at the Lick Observa-tory. (Moons age, 16 clays 18 hours.) THE MOON. 99
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
