Institution
- Minute Tapioca Company Inc., Orange, Massachusetts4
- Mirro-Matic1
- Modern Electric1
- Monarch1
- Monarch Electric, Malleable Iron Range Company1
- Montgomery Ward2
- Morell Ham1
- Mouli Manufacturing Corp.1
- Mueller2
- Murrells Inlet 2020, http://www.murrellsinletsc.com/166
- Nabisco1
- National Aluminum Manufacturing Co.1
- National Biscuit Company3
- National Cranberry Association1
- National Dairy Council2
- National Frozen Food Locker Association2
- National Live Stock and Meat Board6
- National Live Stock and Meat Board Department of Meat Merchandising, Home Economics and Nutrition1
- National Pressure Cooker Company2
- National Presto1