07 Feb 1797 — Gadsby’s Tavern has its inaugural celebration of Washington’s Birthday, and the proprietors appear to know how to attract a crowd: Ladies’ Night. Ladies from BOTH sides of the Potomac were admitted for free, and the fellows were charged admission.
The abbreviation “N.B.” means “Nota Bene,” which is Latin for “Note Well,” as in “Yall best N.B. that we’re having this party on the wrong date because we’re not going to risk being caught tearing roofs off on the Sabbath.”
Washington was busy being president in Flipadelphia, and did not attend this particular event.