Welcome to Litsy!

I originally read these back in the early 90s when they were being published and I was close to the same age as the middle grade protagonists. Libby has been living with her aunt and uncle since her mother passed away, but now her dad, a steamboat captain on the Mississippi in 1857, thinks she is old enough to come live with him again. Libby learns about the evils of slavery (a topic she's never thought deeply about) and finds out that the cabin ⬇