 UP Denver, CO 1937 #M4, blt 1911, ex GW M-1 Otto Perry |
 UP Sterling, CO 1927 #M8, blt 1906 Otto Perry |
 UP Denver, CO 1932 #M9, blt 1911, ex Saratoga & Encampment Valley M-1 Otto Perry |
 UP Omaha, NB 1932 #M10, blt 1907 Otto Perry |
 UP Brighton, CO 1919 #M13, blt 1907 Otto Perry |
 UP Colorado, CA 1920 #M14, blt 1910, ex StJ&GI 113 Otto Perry |
 UP Brighton, CO 1921 #M18, blt 1911, ex OSL M-65 Otto Perry |
 UP Ogden, UT 1936 #M20. blt 1908 Otto Perry |
 UP Boulder, CO 1917 #M22, blt 1909 Otto Perry |
 McKeen RPO #M23, blt 1915 |
 UP McKeen Gas Motor Car #M29, UP blt 1927 Tim O'Connor |
 UP McKeen motor car #M29, UP blt 1927 George Elwood |
 UP #M100, Salt Lake City, UT1936, ex SPLA&SL 1, blt 1910 Otto Perry |
 CGW St. Paul, MN 1931. #1003, blt 1910, cn18, rebuilt by EMD 1928, #C18 Otto Perry |
 Denver, Laramie & NW 1916. #Greenley Otto Perry |
 SP Sacramento, CA 1931 #45 Otto Perry |
 VT McKeen Car Reno NV #22 Woodworth Studios-Edward O'Donnell |
 CGW Motor car by McKeen in 1910 as 1002 rebuilt by EMD 1929 as 1000 Don Ross |
 UP Mckeen #1, 1905 1st in US, 31-foot 100hp 'potato bug', 'doodlebug'
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 Charles City Western McKeen #51, blt 1911 cn67 Charles City IA Don Ross |
 Chicago Great Western McKeen #2001, blt 1910. rebuilt by GE in 1928 as 1004 Don Ross |
 Lakeside & Marblehead American Express McKeen #5 Marblehead Ohio, 1920 |
 Bessemer & Lake Erie Mckeen #1 ©George Elwood |