File:Googoosh, Playing tennis 1970s.jpg - Wikipedia
The Late '70s Ushered In a New Women's Tennis Rivalry: Chrissie vs. Martina - The New York Times
Photos from Wimbledon in the 1970s - Best Wimbledon Photos From the 70s
The greatest female tennis player of the last 50 years: the fans' verdict | Tennis | The Guardian
Super 70s Sports on Twitter: "Super B-Day to my favorite tennis player ever, John McEnroe. He's still waiting for one goddamn call to go his way and I love him for it.