Don Grady, the actor remembered as one of Mickey Mouse's original Mouseketeers, and as Robbie Douglas, from My Three Sons, died on June 27 in Los Angeles. He was 68.

Ginny Grady, the actor's wife, confirmed to the Los Angeles Times that the California native died after a four-year battle with cancer.

Grady began his acting career at the age of 13, when he appeared on The Mickey Mouse Club, in 1955; however, he is perhaps best known for his role as Robbie Douglas on My Three Sons.

The show, which aired from 1960 to 1972, chronicled the life of a pipe-smoking widower-aeronautical engineer, played by Fred MacMurray, who was raising three sons. The show was one of the longest-running family sitcoms of all time.

I think we did a good show, Grady said in a 2001 interview on CBS' The Early Show. It was a clean show. It was a fun show.

Sad, sad day. My dear friend and TV brother, Don Grady, passed away today, Barry Livingston, who played the adopted brother, Ernie, on My Three Sons, wrote on his Facebook page. He was an inspiration to me in so many ways and his impact on my life is indelible. I will miss him greatly.

Grady also had roles in several series, including John Payne's The Restless Gun, Dick Powell's Zane Grey Theater, Wagon Train and The Rifleman as well as the NBC medical drama, The Eleventh Hour.

Click Start to check out photos from Don Grady's career.