The Massachusetts Trial Court Probation Service, more commonly referred to as the Massachusetts Probation Service (MPS), is the Commonwealth's primary supervisory law enforcement agency. Created in 1878, it is the first Probation agency established in the United States. The service was created based on the work of John Augustus, the Boston area bootmaker who is credited as the "Father of Probation". There are 11 division of the Juvenile Court Probation Department in Barnstable, Berkshire, Bristol, Essex, Franklin/Hampshire, Hampden, Middlesex, Norfolk, Plymouth, Suffolk and Worcester counties.