This was the first Sturgeon I ever bought and the second I ever read. (The first was the short story "The Silken Swift" from Unicorns, also collected here.) I got in Toys R Us. Does Toys R Us still sell books? I think they stopped even before I got too old for it to be a good place to get me presents, and even before then their book selection had declined into innumberable "updated" Nancy Drew books. (I preferred bookstores anyway.)
Um! Anyway! "The Professor's Teddy Bear" and "Bianca's Hands" are still the creepiest things ever. I am somewhat less fond of "The Silken Swift" now that I actually know what rape is.