endt Rotsinger Kuehnle (WRK Advertising) is a full service advertising agency located in Toledo, Ohio. WRK Advertising does it all! Television, radio, newspaper, print materials, web sites, logo designs, premium and incentive items, annual reports, special events, whatever you can think of, if it has to do with advertising we do it - even airplane banners! Are you looking for an ad agency that delivers results, you just found it!