<page_title> Rio Grande class K-37 </page_title> <section_title> Roster </section_title> <table> <cell> Colorado Railroad Museum, Golden <col_header> Current Owner </col_header> </cell> <cell> Retired in 1963 in working condition. 491 is the largest operating narrow gauge steam locomotive in the Western hemisphere. <col_header> Notes </col_header> </cell> </table>
Rio Grande class K-37, 491 was operated at the Colorado Railroad Museum.