Papers of attorneys William Gray and Francis Newton from the files of Theodore Yantshev, a young Bulgarian refugee from Communism, documenting Yantshev's struggle to immigrate and gain citizenship in the United States. The bulk of the documents are in the form of correspondence between attorneys at the Boston firm of Powers and Hall and Yantshev, the United States Immigration and Naturalization Service, the Foreign Service, the Attorney-General's office, Massachusetts members of Congress including Richard Wigglesworth, Leverett Saltonstall the secretaries of John F. Kennedy, the American Consul-General in Argentina, and judicial and other officials.

Included are photocopies and translations of Yantshev's Bulgarian birth certificate and educational records. There are also letters of character reference from friends in the United States and abroad, including one from G. M. Dimitrov, President of the Bulgarian National Committee for a Free and Independent Bulgaria, describing Yantshev as "a staunch fighter against the Communists." Correspondence from 1957 and 1958 is between Yantshev's Boston attorney and an Argentinian firm, Marval and O'Farrell regarding the Boston firm's attempts to recover payment for their work on his behalf during the years 1947-1955.