UP 7504 (ES44AC) leads a freight north on the Joint Line through Castle Rock, Colorado.

Castle Rock Famous landmark on the northbound track with Union Pacific manifest.

UP 7504 (ES44AC) runs northbound on the Joint Line past the rock formation that give Castle Rock, Colorado its name.

After crossing over from the Los Angeles Sub to Alhambra at CP Oak, UP 7504 leads this eastbound Windmill special through Pomona seen along State Street.

Grinding hard through Ontario, 4 units lead this Windmill special along the Alhambra Sub. This move it headed for Chaffee, just North of Mojave.

UP 7504 heads north with a very long string of gondolas trailing along behind her. The Bear River Canyon shows off her late spring colors with blue sky to boot!