Sully has his painted pinto pony back, but it had run off previously when Rankin beat Sully. No explanation was given as to the return of the horse.
It is highly doubtful that Dr Quinn's mother would have packed that crate of china so poorly, without being individually wrapped in tissue or newsprint, especially since she already made the rough journey from Boston to Colorado herself previously.
The cast is wearing spring/summer clothing, yet it was mentioned that Dr. Mike's birthday is February 15th.
Brian and Matthew are seen wearing pants with belt loops. Belt loops weren't invented until 1922.
When browsing at books, the first book Colleen takes off the shelf is W Somerset Maugham's book Of Human Bondage written in 1915.
Dr. Quinn was born in the month of February. She is living in Colorado Springs, Colorado. The leaves on the trees are green and there is no snow on the ground or on the mountain peaks. It is apparent that the filming location is not in Colorado or anywhere like Colorado, climate-wise.