Paul Preston, Convention Speaker, Gives Formula For More Business; Banquet Tonight. “Advertising must go on and on, week after week, year after year in the proper buying seasons so that the farmer who thinks of farm ma chinery will think of you,” Paul Preston, Rock Island, Ill., advertis ing expert, today forenoon told his listeners at the thirty-third annual convention of the Iowa Implement Dealers’ association in session today in the Chamber of Commerce ball room. Preston advised implement deal ers to tie up their local advertising with the advertising of the manu facturers and to obtain assistance from their advertising departments. “Use their electrotypes, their sug gested copy and their prepared ad vertising,” he advised, “but put your own personality into your local newspaper advertising. Your per sonality will help sales. Your focal paper is a good place to advertise for 100 per cent of your prospects get the local paper. It’s a sales blun der not to use it and to let your Prospective customers know you have the implement advertised in national farm journals they are reading. “It is time now to plan your spring sales campaign. If you haven't done it—dio it at once when you return home.” Tonight the annual banquet of the convention will be held in the Crystal room of the Hotel Mont rose. President Ernest H. Fabritz of Ottumwa will preside and Roy T. Pullen of Spencer, Iowa, a “Mas ter Farmer” of Iowa, will give an address on The Implement Deal er's Relationship to the Farmer.” Hugh Orchard, convention secretary of the Chamber of Commerce, will give an address on “Problems of Progress.” During the dinner a musical program will be provided by a local orchestra, and seven-year-old Bobby Smythe will give xylophone, trap drums, and song and dance numbers. By special arrangement with a local radio station the ban quet addresses will be broadcast Starting at 8:15 p.m. The convention ends Friday fore noon following a business session and election of officers. Convention singing throughout the sessions has been led by Clare Nichols, representative of the Cedar Rapids Playground commission, PAUL PRESTON,