Bill,
Some great pieces from that final game at Memorial Stadium.
These are fairly easy to find, but the Orioles did two different program covers for the final weekend.
Program commemorating the last weekend
1991 Program #6.jpg
Program from last game
1991 Program #7.jpg
The Orioles actually had seven different program cover variations in 1991. Because I currently have too much time on my hands, here are the other five covers.
1991 Firepower (Last Opening Day)
1991 Program #1.jpg
1991 Firepower (1st Edition)
1991 Program #2.jpg
1991 Firepower (2nd Edition)
1991 Program #3.jpg
1991 Johnny Oates
1991 Program #4.jpg
1991 Memorial Stadium Memories
1991 Program #5.jpg