 In 1837 , William Procter and James Gamble founded a candle and <unk> business in Cincinnati called Procter & Gamble . In the 1880s , the company introduced the product Ivory , a bar of soap . Eventually they began manufacturing <unk> , and sponsored radio dramas , which led to the name " soap operas " . Today Procter & Gamble is the 8th largest company in the world by market capitalization fully diversified in household products , and has 135 @,@ 000 employees worldwide , with manufacturing operations located throughout the state , and their headquarters still based in Cincinnati . 
