Factual error: Near the end, when Horace is delivering Lincoln's Declaration speech, Mike and Sully are talking, you can see their breath. Indicating this was shot during the winter, when it's supposed to be July 4th Independence Day.
Dr. Quinn, Medicine Woman (1993)
1 mistake in The Offering - chronological order
Starring: Jane Seymour, Joe Lando, Shawn Toovey, Chad Allen
Hank: Hey - ladies ain't allowed.
Dr. Mike: I'm not a lady. I'm a doctor.
More questions & answers from Dr. Quinn, Medicine Woman
Answer: A Cooper was someone who made various things out of wood including wooden caskets and even barrels.