Merck and Company Incorporated is a pharmaceutical company located throughout the United States and Canada as well as in certain locations around the world. It is one of the best-known and largest pharmaceutical companies in the world. The company was founded several hundred years ago and used by the United States government during the First World War. The headquarters are currently in Kenilworth, New Jersey, and today Merck not only creates pharmaceuticals, many of which are well-known, they also publish a variety of medical reference books for nurses, physicians, and veterinarians, and have expanded widely past the area of pharmaceuticals. They have over 68,000 employees as of 2017 and some of the employment opportunities may include senior scientists, biologista, animal health marketers, operations technicians, production operators, administrative specialists, and much more.