
Actress Lucille Ball and her husband, actor Desi Arnaz, were two of the stars of the hit television series "I Love Lucy." The black-and-white show premiered on October 15, 1951, and ran until 1957. It was the most watched show for four of its six seasons.

Ball makes one of her classic funny faces as Arnaz follows behind.

The couple look over development plans for Desilu, their production company. Along with producing "I Love Lucy," Desilu produced the classics "Star Trek," "The Untouchables" and "Mission: Impossible."

Holding a seltzer bottle and banana cream pie, Ball acts for "The Ballet" episode in 1952, where Lucy tries to land a gig at Ricky's club.

Madame Lemonde, played by Mary Wickes, looks bewildered as Lucy gets stuck on a ballet barre in the same episode. Ball, who starred in several films and musicals before the debut of her show, actually had dance experience.

Lucy gets hit in the face with a pie during burlesque lessons after a failed ballet session. Known for its slapstick comedy, the series was the first to use a three-camera setup before a live audience.

Baby twin actors Richard and Ronald Lee sit with, from left, a social worker, their grandmother, a nurse and their mother. The episode where Lucy has a baby, "Lucy Goes to the Hospital," was watched by more people than any other program up to that time, with more than 70% of Americans watching.

From left, stars Vivian Vance, William Frawley, Desi Arnaz and Lucille Ball talk on the set. "I Love Lucy" invented rerunning episodes when Ball became pregnant and needed rest.

Ball wears a beard for 'The Moustache' as Vance looks on. The show won an Emmy for best situation comedy in 1953 and 1954. Ball earned two Emmys for her performance, and Vance received an Emmy for supporting actress.

Ball looks at Arnaz through a heart cut out in a newspaper. The couple married in 1940 and divorced 20 years later.

Ball and Vance, dressed as women from Mars, appear at the top of the Empire State Building in 1954's episode, "Lucy is Envious."

Lucy and Ricky go camping in "The Camping Trip," which aired in 1953. "I Love Lucy" became a way for the couple to salvage their marriage, which was strained by busy performance schedules.

Characters Ethel, Lucy, Fred and Ricky fight a battle in their living room in the 1952 episode "New Neighbors."