Middle Sister Groundhouse
(Photo courtesy Iris Baird)

Town: Albany
County: Carroll
Mountain or Hill: Middle Sister
Height above sea level: 3340 FT
Tower Structure Height: Groundhouse
Latitude: 43-58-00
Longitude: 71-26-38
First date of operation: 1927
Operating Agency: White Mtn. Nat. Forest
Type: Groundhouse

Middle Sister Groundhouse in 1928
(Photo courtesy National Archives)

• 1927-1948, foundation remains.
• This stone structure replaced the station on Mt. Chocorua, and remained in service until 1948. It is described as a 10' high masonry Cab, not standard, built in 1921. It was later used to house radio repeater equipment.