In 1973 the Oakland A's won the World Series for the second consecutive year, beating the Mets in 7 games.
The following players appeared for the A's:
Bert "Campy" Campaneris
The following players pitched for the A's:
Rollie Fingers (first player to win Cy Young and MVP (maybe in the AL). did it in 1971)
Blue Moon Odom
On April 27th, 2013, the A's celebrated the 40th anniversary 1973 A's. Most of the living members of the team returned to the field at O.Co and took the field with the current team. Coaches Irv Noren and Wes Stock and former broadcaster Monte Moore were also present.
10,000 members of the crowd (the A's are notoriously stingy with give-aways) got Reggie Jackson bobbleheads.
Oakland A's Timeline from official A's MLB site
Official roster for 1973 Oakland A's from Baseball Almanac
1973 World Series from Baseball Almanac
A's Press release about 2013 celebration