On this day 250 years ago in Philadelphia, Caesar Rodney (delegate from Delaware in the Continental Congress) wrote to his brother Thomas Rodney (a member of the Delaware Committe of Safety) about a parade of the Associators (volunteer militia) in Philadelphia:

Reviewed the day before Yesterday, on the Common, by the Congress, Generals Washington, Gates and Mifflin accompanied by a great number of other officers, most of the Assembly, the Presbyterian Clergy who were here at the Synod-and 21 Indians of the Six Nations who gave the Congress a War-dance Yesterday

Source: https://americanfounding.org/entries/second-continental-congress-may-30-1776/