Cannonball (and other Gaugers...) here is the UP schedule for the year....  as I get a better timeline on it, I'll also post that one.
Bob 
 
 
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  Union Pacific's  2007 Steam Schedule....
 Here's some more info about Union Pacific's plans as written in the
 Colorado Time-Table.
 UP Steam Shop releases tentative 2007 schedule
 Union Pacific's steam shop has released for its 2007 operations. Power
 for the trains will be 4-8-4 Northern No. 844 and 4-6-6-4 Challenger No. 3985 
 built by American Locomotive Company in 1944 and 1943 respectively. All
 trips are tentative and subject to final confirmation.
 Between June 21 and July 4, one of the engines will leave the shop at
 Cheyenne for North Platte and Fremont, Nebraska, on original UP
 trackage, then head east on the former Chicago and North-western to
 Boone, Iowa. From Boone, the steam locomotive will run east to KC
 Junction near Ames, Iowa, and south on the former Chicago, Rock Island
 and Pacific "Spine Line" to Trenton and Kansas City, Missouri. Trenton
 will celebrate its 150th Anniversary during this time. From Kansas
 City, the engine will begin the return to Cheyenne with a stopover at
 Marysville, Kansas, or Fairbury, Nebraska,  then to North Platte and 
 Cheyenne. During the trip, the steam  locomotive will stop for display 
 at population centers and past and  present Up/C&NW/Rock Island 
 crew terminals.
 Between July 19 and 23, both locomotives will operate between Cheyenne
 and Denver. On July 21, the railroad is planning a doubleheader of 844
 and 3985 for the 15th annual Denver Post Cheyenne Frontier Days
 excursion, a Denver-Cheyenne round trip.
 Beginning on August 22 and concluding August 27, UP steam will visit
 the Colorado State Fair operating from Cheyenne to Denver, then
 running a Denver-to Pueblo passenger trip before returning to
 Cheyenne.
 Union Pacific steam will also help celebrate Oklahoma's Centennial
 during the month of September. Between September 9 and 30, one of the
 locomotives will leave Cheyenne for North Platte and Marysville, then
 to Herrington and Wichita, Kansas. From Wichita the train will head
 south into Oklahoma visiting Enid, El Reno, Chickasha, and Lone Star.
 Stopovers are again planned in past and present railroad terminals.
 The train will return to Cheyenne via the reverse route.