Frank Sinatra Jr. and Patty Duke take a Rollfast tandem for a ride in New York. It’s 1965, and the son of Ol’ Blue Eyes is guest-starring on The Patty Duke Show, the hit ABC identical-cousins sitcom starring the Oscar-winning teen. Look for another Sinatra/Duke tandem photo on Rides a Bike. The title of the episode: “Every Girl Should Be Married.”

Here’s the snipe:

“Frank Sinatra Jr. makes his acting debut on The Patty Duke Show.  It’s not an overwhelming debut to be sure, but still he comes across quite agreeably as a young college professor whom Patty thinks her family has lined up to marry her. Most of the humor in this spry episode falls on the shoulders of Miss Duke, who thinks she would be a terrible wife because she got a C minus in home economics.”