Ryan would remain true to these convictions, appearing in many television series, but always as a guest star. Notable appearances include his portrayal of Franklin Hoppy-Hopp in the 1964 episode "Who Chopped Down the Cherry Tree?" on the NBC medical drama about psychiatry, The Eleventh Hour. Similarly, he guest-starred as Lloyd Osment in the 1964 episode "Better Than a Dead Lion" in the ABC psychiatric series, Breaking Point. In 1964, Ryan appeared with Warren Oates in the episode "No Comment" of CBS's short-lived drama about newspapers, The Reporter, starring Harry Guardino in the title role of Journalist Danny Taylor. Ryan appeared three times (1962–1964) on the western Wagon Train, four times (1956–1959) on CBS's Dick Powell's Zane Grey Theater and twice (1959 and 1961) on the Zane Grey spin-off Frontier Justice. Among Ryan's many appearances on the dramatic anthology series of TV's golden age, perhaps most notable are his starring roles in Playhouse 90's production of The Great Gatsby, opposite Jeanne Crain, and in the Buick-Electra Playhouse adaptation of Ernest Hemingway's The Snows of Kilimanjaro, written by A. E. Hotchner, directed by John Frankenheimer, and co-starring Ann Todd, Mary Astor, and Janice Rule. Perhaps Ryan's only partial concession to doing an entire television series was his role as Narrator in CBS's 26-episode acclaimed documentary homage to World War One, released in prime time during the 1964-65 season.