WP 446 was part of a 35 car order built by International Car Company in 1955 and 1956. These were the first steel cabooses on the Western Pacific. This car was thoroughly modernized when it went through Western Pacific S-2 caboose rebuild program in the 1980s but it was retired by Union Pacific in 1987 and sold to a private individual in 1989. The car was moved to Westwood, California where it became part of a gift shop (appears to be a private residence now). The first four images were taken sometime in 1995. The last three on May 29, 2007.