Laura didn't go over to the store when Almanzo and Cap Garland returned with the wheat, her father did. Laura and Almanzo didn't realize they liked each other then, she realized she liked him after his many trips to bring her home from teaching assignments.
Charles had brunette hair and a beard; Caroline had brunette hair pulled back in a bun; Mary was blonde; Laura was reddish/brown; Carrie was blonde; Grace was blonde; Almanzo was blonde.
The name of the store was Clancy's, not Claney's.
The women in this show wore hairstyles not in keeping with the period, such as French braids, down loose with no bonnet or hair ties.
The men's ties are tied with Windsor knots. The Windsor knot wasn't introduced in America until 1936. It was introduced by the Duke of Windsor, a.k.a. King Edward VIII.