The train wreck was September 23, 1923 at the Coal Creek bridge located between Casper and Glenrock, Wy. More than 40 people of the 70 passengers died when the Burlington passenger train plunged into a the creek during the middle of the night. The train was going to Denver. The creek which was usually dry had flooded from raging waters after 3 days of rain and storms. No one knew the bridge was out and the train was going full speed when it went into the water. Cars were piled on top of each other, some were trapped or drowned. Others were washed down stream.
This was a short article in the Casper paper a few weeks ago. No names were mentioned as to fatalities. It was noted that the info came from Kevin Anderson at the Casper College Western History Center in Casper, Wy. He may be able to help you more if you contact him. Good Luck.