I had the deligt of reading From the Mixed-Up Files - a cildhood favorite - to my dearling partner who spent several years of her growing-up-hood on the Upper West Side, who loved the book and now in her 40s says if she'd known the book when she was 12 and living there, she so would have wanted to do that.
She spent her Piscean pre-teen brooding time out at the gardens of the Cloisters, though, I think she did pretty well. (Teh Pretty!)

Thank you. I will immediately go out and The Stone War which I haven't yet read.