The Millers were married in the American Embassy in December 1935 in Moscow. Jenny, the daughter of an employee of the Academy of Sciences in Moscow, was employed by the English language Moscow News while Bob Miller was on assignment for the Chatanooga News.
After the Spanish Civil War the Millers returned to the United States and began operation of the Hemispheric News Service in New York City with Jack Fahy, a veteran of the International Brigades. The publication centered on Latin American affairs and Jenny was the operations Secretary. In 1941 the Millers moved to Washington D.C. and Joseph Gregg was hired as manager.
The Millers had a very active social life with many friends. Pelageya (or Polia) Habicht, a Russian native and very close friend of Jenny Miller was exchanged in 1941 to the United States for Gaik Ovakimian, head of the Soviet espionage organization in the United States from 1934 to 1941 at the time of his arrest as an unregistered foreign agent. Margaret (Peggy) Greenfield, a communist and economic writer and assistant chief of the Progress Reporting Branch, Division of Research, of the OPA was a frequent contact of Jenny Miller.
Elizabeth Bentley identified Jenny Miller as one of her covert contacts.
- Bentley, Elizabeth, testimony, Communist Activity Among Aliens and National Groups, Government Printing Office, Washington D.C. 1950