Two black girls from NYC (I believe) have an opportunity to go to summer camp, maybe upstate? Catskills? Adirondacks? One loves it, the other misses the city. They are best friends. Book describes city life well: hydrants on to cool the girls off, the cool of the apartment, waiting for mom to get home, making lunch, very detailed as I recall, which makes sense given how much I love richly described characters. Then off to camp where I believe the girls drift apart a bit. I loved it and would love to know the title.