Fever 1793

Fever 1973 (novel): http://en.wikipedia.org/wiki/Fever_1793
In 1793 yellow fever is spreading through Philadelphia.

United States of America: http://en.wikipedia.org/wiki/United_States

On July 4, 1776, they issued the Declaration of Independence, which proclaimed their right to self-determination and their establishment of a cooperative union

The current United States Constitution was adopted on September 17, 1787

Independence from the Kingdom of Great Britain -
 Declared July 4, 1776 -
 Recognized September 3, 1783 -
 Current constitution June 21, 1788
 president—George Washington—took office in 1789.

American Presidents: http://millercenter.org/president