WHOI 90TH ANNIVERSARY PICTORIAL POSTMARK: Monday, January 6, 2020 marks the 90th Anniversary of WHOI’s Founding Day. From 10 a.m. – 2 p.m., in Redfield Lobby, 45 Water Street, Woods Hole, come get your official U. S. Postal Service pictorial postmark applied to your own pre-stamped envelopes and postcards. The postmark itself is approx. 4″x 2″.