2009-08-282009-08-281986GPO 1986-491-417/40094https://hdl.handle.net/10365/5843Official Map and Guide1 folded sheet : color illustrations, color map ; 60 x 42 cm., folded to 10 x 21 cm.en-UShttps://www.govinfo.gov/about/policies#copyrightHistoric sites.Fort Union Trading Post National Historic Site (N.D. and Mont.)