MetsRewind on X: May 31, 1964: Mr. Met -- Dan Reilly -- became the first mascot in @MLB when he appeared during Game 2 of the @Mets/@SFGiants doubleheader at Shea. #LGM #MetsRewind #
New York's Original Mr. Met Passes Away at 83
Ex-Mr. Met spills on being the massive-headed mascot
Mr. Met, New York Mets Wiki
MORE
Meet the Original Mr. Met - Sports Collectors Digest
Dan Reilly, the Original Mr. Met, Is Dead at 83 - The New York Times
THE ORIGINAL MR - The Amazing Shea Stadium Autograph Project
Mr. Met - Wikipedia
New York's Original Mr. Met Passes Away at 83
The Amazing Shea Stadium Autograph Project: THE ORIGINAL MR. MET
Dan Reilly, the Original Mr. Met, Is Dead at 83 - The New York Times