On Tuesday June 24, 1939, the New York City Guide A Comprehensive Guide To The Five Boroughs Of The Metropolis - Manhattan, Brooklyn, the Bronx, Queens and Richmond - Prepared by the Federal Writers' Project of the Works Progress Administration in New York City debuted in bookstores.
This 708 page guide included a chapter with a map on the 1939 World's Fair and a large folded map in a back pocket. The map is two sided and is a map of Manhattan on one side and a subway and elevated map on the other side.
The New York Times calls the New York City Guide one of the ten best books on New York City.