70s scary stories youth anthology. Very eerie black-and-white drawings. a ghost saves a kid from drowning

I'm looking for a book or books that I used to check out of my school library in the early 70s. It was an anthology of short spooky stories for 'tweens or teens. It had several ery eerie black-and-white drawings, including one of a girl with long hair looking at her hands, which seem to be detached from her. One story involved a ghost saving a kid from drowning in a closed swimming pool. I think the ghost was named Rusty.