On this day 250 years ago in Philadelphia, the Continental Congress reconvened with a full delegation from Georgia, making it the thirteenth colony participating in the Congress. Georgia was represented by Archibald Bullock, John Houstoun, John J. Zubly, Noble Wimberly Jones, and Lyman Hall. The delegations from Virginia (Peyton Randolph, Richard Henry Lee, Thomas Jefferson, Benjamin Harrison, Thomas Nelson, Francis Lightfoot Lee and George Wythe) and Maryland (Matthew Tilghman, Thomas Johnson, Jr., Robert Goldsborough, William Paca, Samuel Chase, Thomas Stone and John Hall) also joined the Continental Congress that day.

Source: https://americanfounding.org/entries/wednesday-september-13-1775/

And on this day 250 years ago at Fort Pitt, Virginia (now Pittsburgh, Pennsylvania), Thomas Walker, Adam Stephen, Andrew Lewis and John Walker wrote Thomas Jefferson:

After a very disagreeable, wet and fateagueing Journey, we got here on the 10th Inst. the day appointed for opening the Treaty, but found scarcely any Indians here. We have dispatched runners to meet them and hope they will be in soon. We are told that the Shawnese and Delawares are on their way, but can not hear a tittle of the Wiandotts, from which circumstance ’tis feared that they have acceeded to the terms proposed to them by Carlton and Johnson. The few Indians here seem perfectly well disposed toward us,

They enclosed a letter reporting that the tribes of the upper Ohio River were unfriendly to the Americans and that 300 French militia had been sent to reinforce the British Army contingent at Detroit.

“Thomas Walker and Others to Thomas Jefferson, 13 September 1775,” Founders Online, National Archives, https://founders.archives.gov/documents/Jefferson/01-01-02-0124. [Original source: The Papers of Thomas Jefferson, vol. 1, 1760–1776, ed. Julian P. Boyd. Princeton: Princeton University Press, 1950, pp. 244–245.]