Hans Einstein
Einstein was born in Berlin, the son of Josefa Spiero Einstein Warburg and Dr. Fritz Einstein. He spent his childhood in Hamburg, Germany as Nazism gradually took hold. His parents were Quakers, but of Jewish origin. A year after Hitler took power in 1934, his mother moved Einstein and his sister to the Netherlands, leaving his father behind. He finished high school at Eerde, a boarding school in the Netherlands at age 16 and moved to the United States as an exchange student. He attended Furman University in Greenville, South Carolina. One of the first things he did upon arriving was look up his last name in the phone book. The only Einstein he found was a relative: Albert Einstein's son, Hans Albert Einstein. They became friends and he was often invited over whenever Albert visited. He earned his medical degree from New York Medical College in 1946 and did his internship at Paterson General Hospital in Paterson, New Jersey. Following that, he became a medical officer in the United States Army. He then completed residencies in Internal Medicine and Pulmonary Diseases at the New York Veterans Hospitals.
Stephen Brunauer
He became an American citizen around 1925 and began working for the Fixed Nitrogen Research Laboratory of the U.S. Department of Agriculture in Washington, D.C., in 1928. He married Esther Delia Caukin in 1931, an expert in international relations who worked for the American Association of University Women and, after 1944, for the U.S. State Department. They lived in Washington, D.C., with the exception of one year of living in Baltimore while he earned his doctorate from Johns Hopkins University in 1933. They had a son in 1934, who died December 1937, and two daughters in 1938 and 1942. His doctoral thesis led to the development of BET theory, based on work he did with Paul H. Emmett and Edward Teller. He left the Department of Agriculture following the attack on Pearl Harbor and joined the U.S. Naval Reserve and by 1942 was heading its high explosives research group in the Bureau of Ordnance. He recruited Albert Einstein as a consultant to the Navy in 1943. Einstein had corresponded with Esther Brunauer before the war when he was trying to help German academics find employment in the U.S.