1923  It makes the resolute, debonair "M.P." excessively weary to read and to see what is done with his uniform and his professional activity by the tribe of ink-slingers and film-doctors.
1927  The Stobart Company hired him in 1877, to build houses at Duck Lake, including the M.P. barracks and flour mill.
1957  Unfortunately for my vision of gallant politicos risking their lives for their constituents, the Chief's next few sentences revealed the fact that "M.P." was his term for "Mounty."