William Tyler Olcott,
A Field Book of the Stars — Hercules
(1911)
“ Hercules occupies the part of the heavens toward which the sun is bearing the earth and planets at the rate of one hundred and sixty million miles a year. On a clear night the asterism Cerberus, the three-headed dog, which Hercules holds in his hand, can be seen. The belt of Hercules lies just east of the Crown. ”
