Junction House is a former settlement in Lassen County

Lassen County, California

Lassen County is a county located in the northeastern portion of the U.S. state of California. As of the 2010 census, the population was 34,895, up from 33,828 at the 2000 census...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

. It was located at the junction of two trails, one to Reno

Reno, Nevada

Reno is the county seat of Washoe County, Nevada, United States. The city has a population of about 220,500 and is the most populous Nevada city outside of the Las Vegas metropolitan area...

 the other over Beckwourth Pass

Beckwourth Pass

Beckwourth Pass is the lowest Sierra Crest mountain pass and is located at the Sierra Valley's eastern edge near Chilcoot-Vinton, Plumas County, California. Beckwourth Pass is east of Beckwourth, California, in the Sierra Nevada, and is northwest of Reno, Nevada. The pass carries California State...

, later the site of a junction of the Nevada–California–Oregon Railway and the Sierra and Mohawk Railway 6 miles (9.7 km) southeast of Summit

Summit, Plumas County, California

Summit is a former settlement in Plumas County, California. It was located on the summit of the Beckwourth Pass east-southeast of Chilcoot.A post office operated at Summit from 1864 to 1897.-References:...

.

The Junction House post office operated from 1869 to 1876, with a closure during part of 1874. The Junction post office operated from 1879 to 1882, with a closure during part of 1881.