Active Air Inc, Wakeman, OH Aero Atlas Inc, Red Bluff, CA AeroAssociates Inc, Tucson, AZ Aeronautical Services Corp, Cheyenne, WY Aero Service Corp, Philadelphia, PA Aim Aviation Inc, Houston, TX Aircraft Specialties, Mesa, Arizona Air Mayo Inc, Lakewood, CO Alabama Institute Of Aviation Tech, Ozark, AL Allied Signal Inc, Phoenix, AZ A.M. Wheaton Glass Corp A & T Productions, Inc., Pacific Palisades, CA Amerada Petroleum Corp, Tulsa, OK American Aeronautical Foundation, Van Nuys Alsam Inc, Youndston, OH Ayer Associates Automobile Inc Bancroft Manufacturing Co., McComb, MS Bank Of Beaufort, Hilton Head Island, SC Barnwell Drilling Co, Shreveport, LA Beech Aircraft Corp, Wichita, KS Bell Helicopter, Fort Worth, Texas Blue Mountain Air Service, La Grande, OR Brown & Root, Inc Belcher Aircraft Corp, Mojave, CA Canadian Comstock Racing Team Caribbean Air Transport Carstedt Air, Long Beach, CA Challenge Publications Inc., Canoga Park, CA Charles H. Babb Co, Los Angeles, CA Charles Woods Homes Inc, Dothan, AL Consolidated Air Parts Corp, Los Angeles, CA Cornell Aero Lab, Buffalo, New York Calspan Corp, Buffalo, NY/Edwards AFB, CA Coastways Associates Inc, Miami, FL Colorado Interstate Gas, Colorado Springs, Co Colorado Oil & Gas Corp, Denver, CO Commonwealth Plan Inc, Boston, MA CWC Air Inc, Flushing, MI Cutless Aviation Da Pro Rubber Inc. Van Nuys, CA Dean Foods, Franklin Park, IL Dean Milk Co, Franklin Park, IL DEC Aviation Corp, Madison, WI Dollar Lines Inc, San Francisco, CA Tired Iron Inc, Casper, WY Dispatch Services Inc, Miami, FL Endless Turn Inc, Leoti, KS, Environmental Protection Agency, Las Vegas, NV E.T.S. Hokin Corp, San Francisco, CA Farrah Manufacturing Co Inc Fletcher Oil & Gas Flint Steel Corp, Tulsa, OK Flight Enterprises Inc, Prescott, AZ Ford Motor Co, Detroit, MI Forest Patrol Ltd Garrett Airesearch, Phoenix, Arizona Garret Corp, Phoenix, AZ Gower Lebel Inc., Seattle, WA Greenacres Farm Inc, Lexington, KY Grumman Ecosystems Corp, Bethpage, NY Gulf Air Inc (CIA), Miami, Florida H. B. Zachry Co, San Antonio, TX Hill Air Company Inc, Fort Lauderdale, FL Hughes Aircraft, Culver City, California Humphrey's Gold Corp, FL Humphrey's Engineering Co, Denver, CO Hunting Geology & JMC Aero Associates Hodge Laboratories Inc, Wichita Holiday Inns Of America International Commercial Aviaition Service, Kennedy Int Airport, NY Intercontinental Mining, New York, NY JRT Aero Service CO, Wichita Falls, TX Ken McGee Oil Industries Inc Kenlyn Petroleum Corp, Los Angeles, CA Koch Industries Inc, Wichita, KS Kwiki Systems Inc, Leawood, KS Lear Siegler Inc, Santa Monica, CA Madden & Smith Aircraft Corp, Miami, FL Magnolia Homes Manufacturer Corp, Vicksburg, MS Mapco Inc, Tulsa, OK May Air Inc, Boulder, CO Mayhew Supply Inc, Gulfport, MS Marketeer Twin Cities Aviation Inc, Minneapolis, MN L.B. Maytag Aircraft Corp, Miami, FL Mercury Flights, Edmonton, Alberta Mid America Air Transport, Chicago, IL Mid America Pipeline Co, Tulsa, OK Miami Aircraft Ventures Inc., Miami, FL Motorola Inc, Scottsdale, AZ

	G. C. Murphy Co, McKeesport, PA National Bank, Tulsa, OK Natrona Service Inc, Casper, WY Nine Ten Corp, Chicago, Illinois North American Rockeewell Corp, El Segundo, CA Northern Natural Gas, Denver, CO Northrop Corp, Newbury Park, CA North Phoenix Aviation, Phoenix, AZ Occidental Leasing (Occidental Oil), LA,Cal Occidental Oil of Libya Inc, Los Angeles, CA Oklahoma Aircraft Corp, Yukon, OK Orange County Airways Inc, Montgomery, NY Pacific Flight Services Inc, Angwin, CA Pan American Petroleum Corp, Tulsa, Oklahoma Paramount Inc, Atlanta, GA Paramount Trading Co., Vero Beach, CA Park Meadow Inc/Ligon Air Inc, Ligonier, In Parker Pen Co., Janesville, WI Photo File Surveys Inc, Philadelphia, PA Piedmont Airline Pinellas Aircraft Inc., St. Petersburg, FL PFB Enterprises  Phillips Petroleum Co, Oklahoma Philips Drilling Corp, San Antonio, TX Priority Air Transport System, Redwood, CA Purolator Products Inc, New York, NY The Robert Dollar Company RALCO, Cheyenne, WY Raytheon Manufacturing Co, Bedford, MA Recta Air Aenterprises Reading Aviation Services, Reading, PA Red Dodge Aviation Inc, Anchorage, AK Republic National Bank Of Tulsa, Tulsa, OK Ridge Associates Inc, Flint, MI Rock Island Oil and Refining Co, Hutchinson, Kansas RLS 51 Ltd, San Francisco, CA Rojo Inc, Hilton Head Island, SC Rum Cay Development Co, Miami, FL Rusk Aviation, Kankakee, IL Sea Link Aviation Inc, Wilmington, DE Slaco Inc, Fort Lauderdale, FL Slick Airways, San Antonio, TX Southern Natural Gas Co, Birmingham, AL Sperry Gyroscope Co, Great Neck, NY Standard Oil Co, Chicago, Illinois and (Standard Oil Co of California) Stanolind Oil & Gas Co, Tulsa, Oklahoma Star Flite Inc State Of Georgia Forestry Commision, Macon, GA Stevens & Co, New Orleans, LA Superior Oil Co Inc, Chicago, IL Superior Oil Co Inc, Lafayette, LA Supreme Machine Products, Rockford, IL Survair Ltd, Ottawa, Ontario Swiflite Aircraft Corp, New York, NY Tallmantz Aviation Inc, Orange County, CA T.E. Mercer trucking Co, Fort Worth, TX Texas Gas Transmission Corp, Owensboro, KY Texas Instruments Inc, Dallas, TX Texas Railroad Equipment Co, Houston, TX Texas State Optical Corp Transport Aircraft Inc, Sacramento, CA Transelco Inc, Rahway, NJ Trathan Drilling, Shreveport, LA Twin Cities Aviation, Inc, Edina, MN US Department of Commerce, Washington DC Walter Quick Freeze Corp, St. Thomas, USVIslands Westinghouse Credit Corp, Brynmawr, PA Western Contracting Corp, Sioux City, IA Wilco Aviation, Jacksonville, FL Woodward Governor Co., Rockford, IL Youngstown Sheet & Tube Co, Youngstown, OH

	Aerografica y Constructora SA, Mexico City   Altos Hornos de Mexico   Antwerpe Kreesten Central, Antwerp   International Aviation Services, Pretoria   Luft-Transport Dienst GmbH, Dusseldorf, Germany   Petroleos Mexicanos - PEMEX, Mexico   Prakla-Seismos AG, Hanover, Germany   Societe Carta, Creil   South African Iron & Steel Industrial Corp, Wonderboom, South Africa   Trans Peruana, Lima, Peru

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