*  ABC Radio/Television    *  Addison Design    *  Albertsons    *  AT&T    *  Acker, Capazzi & Petersen, Inc.    *  AID Association For Lutherans    *  Anchor Inns    *  Bancorporation                *  Banyan Communications Group, Inc.    * Barker/Billie Analytics    *  Bellomy Research              *  Boodi Research Services    * Banking Services Studies    *  Barlow Research, Inc.    *  Baxter International    *  Black Hills Light and Power    *  Brevet International    *  CNN (Cable News Network)    *  Chilton Research Services    *  City of Soiux Falls    *  Cola-Schroeder                   *  Con-Agra    *  Country Pride Chicken    *  CBS Radio/Television    *  CRI (Custom Research Inc.)    *  Chiquita Tropical Products    *  Coca-Cola Company    *  Coleman Research                   *  Consumer Pulse    *  Creative Marketing Consultants    *  Danis Research    * Decision Making International    *  Directions Research, Inc.    *  Doggie Drink Manufacturing    *  Dynamic Educational Systems    *  Darilean      *  Daytons    *  Diagnostic Research, Inc.    *  Doane Marketing Research    *  Dun & Bradstreet     *  Electronic Advertising    *  Fairbank, Bregman & Maullin    *  Fuddruckers    *  FCC    *  First Bank    * Gallup Organization    *  General Motors    *  Ground Water Consultants    *  Healthcare, Inc.    *  Helga Racker & Associates    *  Hardees    *  Hefty    *  Howard Merrel & Partners, Inc.    *  Iowa Lottery Commission    *  Iowa Wildlife Federation    *  Job Corp of Iowa    *  Koppel Research Group    *  Legette, Brashears & Graham, Inc.    *  Lieberman Research    *  Market Strategies    *  McKennan Hospital    *  Miller Research    *  Miss America Pageant    *  Monsanto Chemical Co.    *  M/A/R/C Group               *  Market Trends    *  McDonalds    *  Minnesota Wildlife Federation    *  Monroe Mendelsohn Research    *  Mrs. America Pageant    *  N.K. Friedricks Associates    *  NBC Radio/Television    * National Rifle Association    *  Nebraska Wildlife Federation    *  Nielsen Marketing Research    *  North Dakota Wildlife Federation    *  Nicholas Research Association    *  Northern States Power    *  Norwest Banks    *  Ocean Spray    *  Paulsen Advertising    *  Phoenix Systems         *  Pioneer Enterprises    *  Pizza Hut    *  Princeton Survey Research Center    *  Proctor & Gamble Co.    *  Public Opinion Strategies    *  Quick Test Opinion Center    *  Red Lobster    *  Research, Inc.    *  Rental Age Magazine    *  Roper Organization   *  Ronning Enterprises    *  Rowan & Blewitt    *  SRI Gallup    *  Sheraton Hotel Corporation     *  Schrader Research     *  Sioux Falls Water Advisory Board    *  South Dakota Attorney General   *  South Dakota Wildlife Federation    *  South Dakota Funeral Directors Ass.    *  South Dakota State Legislature    *  South Dakota Lottery Commission    *  S.P.D. (Services for Product Dev.)   *  Strategic Radio Research             *  Southeastern Institute of Research    *  State of South Dakota    *  Startmar    * Taco Bell          *  Taco John    *  Total Research Corporation    *  U.S. Air Force           *  U.S. Department of Education    *  U.S. Department of Health    *  U.S. Postal Service    *  U.S. Senator Larry Pressler    *  U.S. Senator James Abnor    *  U.S. West    *  Unisearch    *  Valley State Bank       *  Vanderveer Group    *  Wade West    *  Wheeler and Associates    * Williams Pipeline Co.       *  Wirthlin Group    *  Yankelovich, Clancy, Shulman