Warning - offtrack subject!! The Little House on the Praire show is set in the town of Walnut Grove, MN. Their original sod house was there on the banks of the creek. IIRC it is just a depression in the ground now. BEAUTIFUL area and a great place to see. Park in someone’s driveway for a small fee and walk past the newer farmhouse and down aways to the creek. And the museum is in town.
A place I would REALLY recommend is where their farmhouse, depicted in the show, really was - near De Smet in South Dakota.
http://www.ingallshomestead.com/index.html
Some farm family loved the Little House on the Prairie story. They ended up selling their farm in Nebraska(?) and bought the original Wilder property several years ago. They built a recreation of the house based on her books, a barn, etc. They moved a local one-room school house from the nearby town out to the far side of the property. You take a horse-drawn wagon to get out there. Guides are in period-costumes, crafts for the kids (rope making, candles, milking, etc.) Costs $10 per person!!
Lots of fun for the kids. We did it several years ago on the way to Minneapolis. (The place in SoDak and MN), then saw the play “Little House on the Prairie” in Mpls. where the young girl actress from the show played the mom in the play. My girls LOVED it!
Sounds like you had a wonderful trip. I bet your girls will remember it always.
Do not forget the Wilder Farm in Mansfield Missouri, where Laura lived after she married and where she wrote her books.
http://www.lauraingallswilderhome.com/