All 18 baseball teams each with their individual envelopes included in this set (10 AL teams, 8 NL teams). Each envelope contains 12 photos. Highlights are Roger Maris, Mickey Mantle, Yogi Berra, Willie Mays, Roberto Clemente, Minnie Minoso, Nellie Fox, Harmon Killebrew, Eddie Mathews, Carl Yastrzemski, Ernie Banks, and Brooks Robinson. NRMT condition. Circa 1961, since the Twins didn't exist back then.