At KROC she helped with writing copy and interviewing celebrities who were in town (usually to visit the Clinic) including Lou Gehrig, Jeanette MacDonald, Knute Rockne and Ernest Hemingway.

It was at KATE Radio that Lynch first introduced the husband and wife characters of Ethel and Albert, born as a three-minute "filler" sketch in her woman's show.

The show moved into commercial television in 1950 as a ten-minute segment on The Kate Smith Hour, and in April 1953 became a half-hour program on the NBC network.

Kay Gardella of the New York Daily News wrote that Ethel and Albert was "generally regarded as the top domestic comedy on TV.

Jack Gould of The New York Times, has given credit to the show and its creator-writer when he wrote, "the author of Ethel and Albert, of course, is Miss Lynch herself.

She has lost none of her uncanny knack for catching the small situation in married life and developing it into a gem of quiet humor.

The show was picked up by CBS as the 1955 summer replacement for the Spring Byington vehicle December Bride, and it was so popular that Lynch was offered her half-hour prime-time slot (sponsored by Maxwell House).

Ethel and Albert gained a devoted following across America, and in the fall of 1955, the show again switched networks, this time to ABC, sponsored by Ralston Purina.

AT&T brought the couple back in a 1961 instructional semi-animated video called Mr. Digit and the Battle of Bubbling Brook that focused on all-numeric dialing.

Six episodes of Ethel and Albert were adapted by Granada Television in Manchester, England, in 1979, titled Chintz and with a British cast.

Lynch lived in Becket, Massachusetts, and continued to write, revisiting the characters of Ethel and Albert as a couple in their nineties.