It is revealed Hoard has been in prison for 5 years due to Marshal Troop, and it was in the same state. Dan Troop had only been Marshal in Laramie for less than 2 years at that point, and had come to Laramie from Abilene Kansas.
The sound of a piston-engine airplane can be heard in the background during the scenes in Lilly's office, even though they were filmed indoors on a sound stage at the Warner Brothers studio. That studio was located near the Burbank Airport and passing aircraft were sometimes loud enough to be heard and recorded indoors.
At 1 minute 26 seconds the head and hand of a crew member can be seen in the bottom left corner of the screen pulling a table out of the way so the camera can move in on a close up of Lily and Johnny.