YA/Children’s ghost story anthology book

I’ve been searching for this book for years but we shall see.
I read a horror anthology book targeted for children (I read it in elementary school) and need the title. I cannot remember much of the stories but I do know the topic of two.

The first one was about a Nantucket sleigh ride. A girl is reading Moby Dick and her uncle notices. He informs her of what Nantucket sleigh rides are and elaborate on the dangers of them.
The end of the story reveals he is a ghost and has rope burns on his wrists (from a Nantucket sleigh ride).

Another story was about a couple stopping at a gas station on a road trip. Someone goes to the outhouse and is transported to a new world. They watch a sort of native American battle unfold.

The cover featured a native american from the aforementioned story. The book is likely from the 70s-80s.