Mark,
I really like that calendar, too. 1960 was really the beginning, except for a couple seasons, of two plus decades of very good Orioles teams. Over those years, the Orioles farm system would produce plenty of major league talent.
The 1960 Orioles farm system consisted of the Vancouver Mounties (AAA), Miami Marlins (AAA), Fox Cities Foxes (B), Tri-Cities Braves (B), Aberdeen Pheasants (C), Stockton Ports (C), Bluefield Orioles (D) and Leesburg Orioles (D).
Here are programs from each of the teams, except Tri-Cities. I have the 1961 Tri-Cities program, but have never seen the 1960 issue.
Vancouver Mounties (AAA)
It's hard to tell from the scans, but one program is red and the other orange.
1960 Vancouver Mounties #1.jpg 1960 Vancouver Mounties #2.jpg 1960 Vancouver Mounties #3.jpg
Miami Marlins (AAA)
1960 Miami Marlins #1.jpg 1960 Miami Marlins #2.jpg
Fox Cities Foxes (B)
1960 Fox Cities Foxes.jpg
Aberdeen Pheasants and Stockton Ports (C)
1960 Aberdeen Pheasants.jpg 1960 Stockton Ports.JPG
Bluefield Orioles and Leesburg Orioles (D)
1960 Bluefield Orioles.jpg 1960 Leesburg Orioles.jpg