With major clients such as Pepsi Cola, Max Factor, Revlon, and Helena Rubinstein, Steckler's work was featured in magazines such as Ladies' Home Journal,[5] McCall's,[6] Playboy,[7] and Look,[6] and made the cover of publications such as Good Housekeeping (1962–66), The Saturday Evening Post (1962–66),[8] Popular Photography (1961–68), and Camera (1968–71).

[11] A much abbreviated list: For the next phase of his career, Steckler turned to directing television commercials.

Perhaps his most well known TV ad came in 1974, when he put NFL quarterback Joe Namath in pantyhose for a Hanes Beauty Mist commercial.

[14] Some of his prominent clients have included: In 1974, Steckler directed and filmed the live-action sequences for the Emmy award-winning television special, Free to Be... You and Me.

As a result of this discovery, and of their subsequent release to the public, Len Steckler appeared on the “Today Show” (February, 2010) and was interviewed by Meredith Vieira about that day in December 1961.