I went to quite a few Oakland A's games in 1991, but was unable to make it to the game when Rickey finally broke the all-time stolen base record. Fortunately, this little photo viewer perfectly captures the moment.
I purchased this plastic viewer at the Oakland Coliseum some time during the summer of 1991. On one side it commemorates Rickey's 939th stolen base, which he achieved on May 1, 1991 to pass Lou Brock on the all-time list. I've taken apart the end of the viewer to show the picture inside, showing Rickey holding aloft third base in celebratory fashion.