Mysteries for Children

I don't remember reading mysteries as a child. i remember reading the Pokey Little Puppy and I remember reading Beverly Cleary's wonderful books, and then I discovered Nancy Drew books and while they were for girls, they weren't for little girls. I ran across this book, The February Friend, over at GoodReads. It sounds sweet and I have to wonder if it will launch some young readers onto a lifelong path of reading mysteries. How wonderful to be a writer that could steer so many readers in that direction. does anyone remember reading childrens' mysteries as a kid? Anything stand out?