Отец Хаммерa приехал в США из Одессы в 1875г. Он занимался медицинской практикой и владел пятью аптеками.

His father Julius (from a family that had made and lost its fortune in shipbuilding) was brought to the United States from Odessa in 1875, and settled in The Bronx, where he ran a general medical practice and five drugstores.

Hammer was the son of a Russian emigrant who worked his way through the Columbia University medical school, developed a successful medical practice, and then diversified into the wholesale drug business and retail drug stores.

http://www.larouchepub.com/other/1997/2423hammer_gore.html