Springtime - S3-E2
Continuity mistake: While Adam and Ted Hackett are talking on the front porch, in the exterior shot we can see the tablecloth inside the house is solid white, but in the interior shots the tablecloth has a red/white check type pattern. (00:31:15)
Continuity mistake: Adam is in the hotel lobby awaiting the arrival of a rider. The clock behind him says 3:30. He opens the door and looks out for a few seconds, then closes the door. The clock has jumped to 3:35.
Springtime - S3-E2
Continuity mistake: When Adam introduces himself to Ted Hackett, the back-junction on Ted's Y-back braces is bunched up as he and Adam are walking through the doorway, but in the next interior shot of them entering the home, the Y-back is suddenly lying properly. (00:31:35)
The Guilty - S3-E23
Continuity mistake: Ben Cartwright agrees to meet a man at the land office at 9:00 the following morning but when Ben arrives at the office the next day, the time on the wall clock is 5:47. In a scene that takes place a few minutes later, the clock still says 5:47.
