The largest operational diesel-electric locomotive in the world, UP 6936, soaks up some sunlight at IRM.

UP 6936 & 6930 team up with a freight extra at the Illinois Railway Museum.

A special visitor from the Union Pacific fits in perfectly with the DD40X #6930 and GTEL #X-18 at the Illinois Railway Museum. Big thanks to the UP for sending the 6936 to the museums 60th Anniver... (more)

Union Pacific Centennial within the Union Pacific Steam Shop at Cheyenne.

Merger mania in Utah's Price Canyon: A trio of Southern Pacific AC4400CWs lead a stopped IPP train at Utah Railway Junction while a Union Pacific officer's special rolls by on the main, headed eas... (more)

Tight curves—short tunnel—long locomotive
Having just negotiated one of the sharpest curves on the Moffat Tunnel Subdivision at 12 degrees, a westbound Union Pacific (Bill Wimmer) p... (more)

A Union Pacific Passenger Special hosted by engineering department head Bill Wimmer lead by stately Heritage Fleet Centennial DDA40X #6936 enjoys Passenger Speed running through Grandview, Texas a... (more)

A Union Pacific passenger special, run to commemorate the Idaho Statehood Centennial, zips east along the Salt Lake Sub at the Glovers Lane overpass in Farmington. The nine car train will be route... (more)

After spending the night camped next to the Kelso depot, the first eastbound of the morning had a big surprise, DD40 UP 6936 on the point! The train has stopped to switch out cars in the small Ke... (more)

UP DD40X 6936 leads a Southbound inspection special across the Mojave Subdivision seen from the Hwy 202 overpass nearing downtown Tehachapi.

After a quick crew change at the Helper depot, a Union Pacific engineering special heads east through light rain in the rural community of Spring Glen.

UP runs an annual Engineering Special that frequently seems to make its way over the Moffat! Such was the case here as the eastbound special, led by UP 6936, wraps its way through Byers Canyon. Th... (more)

A couple miles north of Ault, UP's MNYNP is rolling north toward Nunn where it will take the siding. UP 6936 was set out in Denver due to mechanical issues after leading an engineering special ove... (more)