3.5 oz tube. In 1752, Dr. William Hunter of Newport, Rhode Island founded the apothecary shop that would come to be known as Caswell-Massey. Today, Dr. Hunter’s legacy remains – a legacy of quality that has stood the test of time. Most of these products are packaged very closely to Dr. Hunter’s original packaging – fit in beautifully at rendezvous, reenactments and living history events.