In 1946 Florence Knoll hired Herbert Matter to revamp the Knoll public image. The Swiss-born graphic designer directed all visuals from logo and catalog designs to photography and advertising until 1966.
One of Matter’s most famous advertisements for Knoll, the chimney sweep ad almost never made it to print. Florence was not initially in support of the concept, thinking it was not dignified enough for the Knoll brand. Matter won out, and the success of the ad is unquestionable - it was published in The New Yorker magazine for 13 years. [ via ]