'The Simpsons'' Marcia Wallace Was a 70s TV Fixture

Her most recent high-profile role was as the voice of Edna Krabappel on "The Simpsons," but actress Marcia Wallace was a fixture on television in the 1970s, long before she joined the cast of the animated Fox comedy. Wallace died on Saturday at the age of 70.

Before "The Simpsons," Wallace's most well-known roles was that of Carol Kester, the receptionist for Bob Hartley, the psychologist played by Bob Newhart in "The Bob Newhart Show." Wallace worked on the series, playing the strong but self-deprecating Carol, from 1972 to 1978.

Wallace began her television career working for Merv Griffin, and during the 70s, she was ubiquitous on a handful of popular celebrity-panel game shows, including "The Hollywood Squares," "Match Game," "The $25,000 Pyramid" and "To Tell the Truth."

Wallace stayed busy on television throughout the 80s and into the 90s, as well, appearing frequently as a guest star on series such as "Taxi," "Murphy Brown" and "Full House."

Wallace had been diagnosed with cancer in 1985, and in the wake of the diagnosis, she became a hard-working supporter of breast cancer awareness, writing several books on the topic and speaking to women's groups across the country. In 2007, she won the Roswell Park Cancer Institute's Gilda Radner Courage Award.