1817 April Ladies’ Voucher for all the Wednesday balls at Almack’s Assembly Rooms, London, U.K. in April 1817. The voucher is for the Marchioness of Buckingham to attend the balls at Almack’s “on the Wednesdays in April 1817.” There are initials in the lower right hand corner marked, “MD”. These initials might be for Mary Marchioness of Downshire who may briefly have been a patroness ca. 1816-1817. The red wax seal is also intact on the front. “Pall Mall” is written on the back of the card.Via Huntington Museum, California, U.S.A. https://hdl.huntington.org/digital/collection/p15150coll7/id/10672/

Subscribers to Almack’s were allowed to bring a guest to a Ball, if they were approved first. They called at the Rooms in person and were either granted a Strangers Ticket of admission or were banned. Rooms were open for supper, gaming dancing lasting the night. At eleven o’clock, doors were closed and no one, not even celebrities were admitted. Once a young lady making her debut during the London Season had been granted a ticket to Almack’s, her social standing was assured. The Patronesses introduced the debutante to people of importance and selected her dance partners.