The Klamath was a passenger train of the Southern Pacific on its route between Oakland, California, and Portland, Oregon, using the line through Klamath Falls, Oregon, between Mount Shasta and Eugene, Oregon.
The Klamath became the bottom-ranked train on the San Francisco-Portland line with multiple head-end cars making all stops to pick up and deliver express and mail along the route.
There were a few coaches and a few sleeping cars, including one running through to Seattle, Washington.
Sleeping cars were eliminated from the train on September 23, 1956, and the name Klamath was dropped a week later when the train became head-end cars only.
[1] Trains 19 and 20 typically contained the following sequence of cars during the 1950s.