The Adirondack Kids Book 5 Islands in the Sky. Justin Robert, Jackie Salsberry and Nick Barnes can’t wait. They are planning to climb their first high peak – Algonquin. Will they make it? Join The Adirondack Kids as they learn to expect the unexpected while hiking on the trail in the spectacular Adirondack wilderness. Recommended ages 7-12. Pages: 78. Size: 5.5′ x 8.5′.