A series of letters and postcards written from 1912 to 1914 by DTM magnetic observer and assistant physicist Clarence Hewlett were recently donated to the DTM/GL Library Archives. The letters were given by Roberta Gibson whose father’s cousin, Ella Glynn, was the recipient of the letters. During the period April 1913 to November 1914, Hewlett writes about sailing in the South Pacific and Atlantic visits to the Falkland Islands, St. Helena, and Bahia on scientific expeditions. He also discusses his work involving the reduction of atmospheric electric data from cruises aboard the "Carnegie" and his move into the “new laboratory” at DTM—the Abelson Building—which is now the oldest on the BBR campus.

Following his time at DTM, Hewlett went on to hold faculty positions at Johns Hopkins University, the North Carolina College for Women, now the University of North Carolina, Greensboro, and the University of Iowa. In 1922 he joined the General Electric Company Research Laboratories, where he was employed as a physicist until 1943. He was a fellow of the American Physical Society and the Acoustical Society of America.