The oldest building still standing at Wah-Tut-Ca Scout Reservation is Northbook Lodge. It was the first Chadwick building to be re-assembled in the New Site in 1936. The building’s first use was  to house the work crews who built the dining hall and the camp.
For many years it served as a “Scouter Lodge”.
In the late 1960s after years as a “storage building” it was reopened and used as the Scoutcraft and Nature Center. In the 70s it became the Ecology/Conservation Program area. Since the 1990s it has supported the Discovery Program.

Before it was at Chadwick it was owned by the Girl Scouts who got it from the City of Lowell. Lowell Used it as a temporary polling station which would be set up durring election. Over the years Northbrook would be refurbished many times. In 1937 it was painted blue.