Trunkline Maps

Trunkline Maps

These one-sided maps show the road surface types (Cement Concrete, Bituminous Concrete and Sheet Asphalt, Waterbound Macadam, Gravel, Sand-Clay, etc) or Condition (Good, Under Construction, Poor but Passable, Impassable, etc).

Know Issues are:

1919 July 1 (Lower Peninsula), July 1 (Upper Peninsula)

1920

1922 Sept 1, Sept 15(LP), Oct 1, Oct 15 (UP)

1923 May 15, June 1, June 15

1925 Jan 1 (UP)

1926 Nov 15

1928 Oct 1

1930 July 1

All are needed for my collection, except the Oct 15, 1922 Upper Peninsula map shown below.

A 1974 Trunkline map was also made, but its purpose is unclear. See the scan of the lower right corner below.