In 1833 John McKesson and Charles Olcott opened a small drug import and wholesale shop in New York City's financial district. The Olcott & McKesson business thrived, providing clients botanical drugs--herbs, roots, leaves, bark and vegetable extracts. Early on they brought Daniel Robbins on board and in 1853, after Olcott died, the company was renamed McKesson & Robbins. The corporate entity McKesson is still in business, and more information is available on the McKesson web site.