The real Dora Hand was murdered in 1878 in Dodge City by Jim "Spike" Kennedy who mistakenly thought he was shooting Mayor James H. "Dog" Kelley. She was staying in his home while he was gone for medical reasons. Kennedy was acquitted.
Dora tells Bob Rellance she's 30, so he needs to go back to Texas to marry a girl his own age. Actor Joe Turkel was actually 29 at the time of filming, while actress Margaret Hayes was 39.