Under the heading 'Checkmate!', the text says,
Intel World Chess Championship 1995
Garry Kasparov versus Vishy Anand
World Trade Center Observation Deck
September 11, 1995 through October 13, 1995
on Mondays, Tuesdays, Thursdays, Fridays, 3:00 pm
For tickets call 1 800 388 KING
The four sponsors listed at the bottom are
World Trade Center,
Intel World Chess,
Alliance for Downtown New York Inc.
For the history of the PCA (Professional Chess Association), see my page World Chess Championship : FIDE/PCA Chronology. I've documented the event shown in the poster on the page 1995 Kasparov - Anand PCA Title Match.
Just above the name for that last sponsor, 'Alliance for Downtown New York Inc.', is a logo composed of buildings that appear to say 'Alliad', where the two letters 'll' represent the twin towers of the World Trade Center. The group's LinkedIn page, Overview ('Nonprofit Organization Management'), shows a similar but different logo that spells 'Alliance'.
I found the image in an August 2007 eBay auction. The auction description said,
1995 WORLD CHESS CHAMPIONSHIP PROMOTION CARD SEPTEMBER 11, 1995 WORLD TRADE CENTER
Attractive announcement of Garry Kasparov versus Vishy Anand duel that took place on that fateful date, September 11 at the World Trade Center. ROOK GRAPHIC on opaque/glossy white chessboard. Suitable for framing. Dimensions: 6" x 9".
Accompanying WTC NEWS (World Trade Center) announcement: "The world's greatest chess players will compete a quarter mile high in the sky ... on the 107th floor Observation Deck at Two World Trade Center..."
The connection between my post about 'Chess in The Graphic' and this poster is the phrase 'ROOK GRAPHIC'. From such connections little discoveries are made.