The Rex Montana Story - S1-E35
Revealing mistake: When Flint follows the Indians, there's a strong wind blowing. But the two puffy clouds in the backdrop sky never move.
The Rex Montana Story - S1-E35
Revealing mistake: When Rex interrupts the poker game, the camera pulls in for a close-up of the lantern - so close that we can see it's illuminated by a big round light bulb.
The Rex Montana Story - S1-E35
Visible crew/equipment: During Flint's observation of the pow-wow, tire tracks from the camera truck are visible in the background.
The Mary Halstead Story - S1-E10
Revealing mistake: Mary dies at the end, but while Adams comforts Tom, it's apparent that her corpse is still breathing.
Continuity mistake: Major Seth Adams, played by Ward Bond, is introduced to Miss Mary Richards and addresses her as such. A few minutes later he says goodbye to Miss Richardson.