Yerkes (at the WSW part of Mare Crisium)
Lat: 14.57°N, Long: 51.7°E, Diam: 35.66 km, Depth: 0.62 km, Rükl: 26
- Named for Charles Tyson Yerkes (June 25, 1837 – December 29, 1905), an American financier. Yerkes decided in 1892 to bankroll the world's largest telescope after being lobbied by the astronomer George Ellery Hale and University of Chicago president William Rainey Harper. He would contribute nearly $300,000 to the University of Chicago to establish what would become known as the Yerkes Observatory, located in Williams Bay, Wisconsin. Although designed for visual use, Ritchey used the Yerkes instruments to photograph the Moon and other objects starting in 1900.
- Rimae Yerkes (an unofficial name from an explorer of all sorts of lunar surface features for the cluster of rilles west-northwest of Yerkes).