Beginning with the 1933-4 Century of Progress in Chicago, road maps were issued for these events. Diverse firms, not just oil companies, issued these advertisements. In addition, some state maps were issued to capitalize on auto traffic passing through.

Century of Progress

Barnsdall 1933 Issue	Cities Service 1933 Issue	Conoco 1933 Issue
Conoco 1934 Issue	Deep Rock 1933 issue	Diamond 1933 issue
Diamond 1934 Issue	Gulf 1933 issue	Mobilgas 1933 Issue
Lubrite 1933 Issue	Pure 1933 issue	Pure 1934 issue
Shell 1933 issue	Shell 1934 issue	Standard 1934 issue
Curt Teich Postcard manufacturer based in Chicago	Lake Shore Route Association	Ohio Commission The Ohio Commission issued two maps to celebrate the Century of Progress, and possibly to drum up excitement for its upcoming Great Lakes Expo.

Great Lakes Exposition

Relatively unknown, the Great Lakes Exposition was held in Cleveland from 1936 to 1937. Few maps are known.

1936 issue, A 1937 edition is also reported.

1936 Issue, Cartography by Mountcastle Map.

Golden Gate Exposition

Held in 1939-40, the Golden Gate Exposition is relatively unknown in comparision with the first New York World’s Fair. In addition to the Signal map illustrated below, a Shell Oil map is also reported.

1938 issue