Caboose 11531 (Frisco 1201) by Frisco.org Posted on February 6, 2018 Caboose 11531 (Frisco 1201) Caboose 11531 (Frisco 1201) at St. Louis, Missouri in June 1981 (Ken McElreath). This entry was posted in BN Patched, KM Collection and tagged 11531, 1201, Caboose. Bookmark the permalink.