Proclimation signed on June 12, 1956, "Yankee Day" in Newark NJ. This impressive piece is signed at the bottom by 37 members of the 1956 Yankee World Championship team including Mickey Mantle, Billy Martin, Casey Stengel, Dan Topping, George Weiss, Elston Howard, Yogi Berra, Whitey Ford, Bill Dickey, Mel Allen and more. 12 x 17'', framed to 22 x 27.5''. All of the signatures are in mint blue ballpoint, except for Dan Topping who has signed in fading black ink. Near Mint.