Foster W. Greenhalge started out as a Druggist in Nashville around 1860. He started out his business at the corner of Cherry & Union Streets, and then from 1883 on, he was located on North College. From around 1890, until 1900, he was selling Proprietary medicines. After that, he started calling himself a Specialist in Neuralgia & Rheumatism. Chances are that he continued to sell some of his preparations past the turn of the century.