Great Northern Railway Caboose X-74 in red color scheme at Great Falls Montana in 1971. Other subject classes: Caboose

Great Northern Railway Caboose X527 at Great Falls Montana in 1974. Other subject classes: Caboose

Great Northern Railway Caboose X-51 in mineral red color scheme at Great Falls Montana in 1971. Other subject classes: Caboose

Great Northern Railway Caboose X-286 in Big Sky Blue color scheme. At Great Falls, Montana in 1971. Other subject classes: Caboose

Great Northern Railway Caboose X-234 in Big Sky Blue color scheme. At Great Falls, Montana in 1971. Other subject classes: Caboose

Great Northern Railway Caboose X-232 at Great Falls, Montana in 1971. Other subject classes: Caboose