Marler resigned from the legislature on June 30, 1954, and was appointed to the federal cabinet of Louis Saint-Laurent as minister of transport. Later that year he won a by-election and became the Member of Pariliament for the federal district of Saint-Antoine—Westmount. He was re-elected in the 1957, but was defeated in 1958.
The Edward VII issue of Canada : a detailed study / by George C. Marler. -- [Ottawa] : National Postal Museum, c1975.
The law of real property : Quebec / by William de Montmollin Marler ; completed and arranged by George C. Marler ; with a foreword by P.B. Mignault. -- Toronto : Burroughs, 1932.
Canada, the admiral issue, 1911-1925 / by George C. Marler. -- Toronto : Unitrade Press, 1980.
Canada : notes on the 1911-1925 issue. -- State College, Pa : American Philatelic Society, 1949.
Booklets of the admiral stamps of 1911 to 1925 / by George C. Marler ; editor R.J. Woolley. -- [Canada? : s.n., 1970?] ([Thornhill [Ont.] : J.F. Webb]).