Welcome to Litsy!

One of my most obscure old favorites, because it never made it into paperback. (The library journal reviews weren't great, which makes me long for magic so I could go back in time and smack some heads.) It includes a series of many different kinds of magical adventures -- mermaids, pixies, witches -- but the chapter featuring a lonely ghost girl is truly... haunting.

Thanks to @willaful for posting about this one. It‘s out of print (and used copies will run you about a hundred bucks,) but a digitized copy is available to borrow on Open Library.
It‘s a delightful book, and should not be lost to the whims of waning popularity and the ravages of time on physical objects.