Chapter 38 of Roughing It:

Loving and Carter identify Desert Wells as a station between Ragtown and Dayton. Pierson locates Desert Wells after Reed's Station, between Nevada and Dayton. Desert Wells existed sometime after July 1861, when it began to serve as a relay station for the Overland Mail Company line. During the last few months of its existence, the Pony Express also used the Desert Wells station facilities. (NPS)

Unionville is a small hamlet in Pershing County, Nevada, located south of I-80 and just west of State Route 400 on Unionville Road, with the most recent population estimate being approximately 20 people. The town's best years were during the 1870s, when it was an active mining and prospecting town serving the surrounding hilly region.