Peyton Randolph, the speaker of the Virginia House of Burgesses, was elected President of the Continental Congress.
The main result of this Congress was the creation of the Continental Army with George Washington as its commanding general. Up to this point, the colonial army had been composed of uncoordinated militia units.
Also noteworthy about this exact same day is that it was the day that Fort Ticonderoga was captured by Colonel Benedict Arnold of the Connecticut militia. This of course, was before he betrayed us and defected to the British Army.