When was the county, where Shelby Airport is located, established ?
Shelby Airport: Shelby Airport (IATA: SBX, ICAO: KSBX, FAA LID: SBX) is a county owned airport two miles north of Shelby, in Toole County, Montana. Toole County, Montana:  The county was established in 1914 from parts of Hill County and Teton County and was named after Joseph Toole, the first and fourth governor of Montana.
1914