Caboose 11703 (Frisco 1729) by Frisco.org Posted on January 14, 2015 Caboose 11703 (Frisco 1729) Caboose 11703 (Frisco 1729) at West Chicago, Illinois on April 3, 1985 (D.R. Halfield). This entry was posted in BN Patched, RT Collection and tagged 11703, 1729, Caboose. Bookmark the permalink.