The first set of pictures are from May 21, 1969 when the Orioles played the Twins at Memorial Stadium:
We can see from the scoreboard that the Orioles won 4-3 as Davey Johnson, Boog Powell, Pete Richert, and Andy Etchebarren are walking off the field.
Here is a shot of Davey Johnson running to first as Harmon Killebrew is waiting for the throw:
And here is Paul Blair trying to lay down a bunt:
We have a nice shot of the back of Brooks Robinson's jersey as Dick Green is about to be tagged out at 3rd.
We get to see Earl Weaver wearing the vest while discussing a call with the ump: