22 C.F.R. § 51.45 Marriage to an alien prior to March 2, 1907.
Title 22 - Foreign Relations
A woman citizen of the United States who married an alien prior to March 2, 1907, did not lose her U.S. citizenship unless she acquired as a result of the marriage the nationality of her husband and thereafter took up a permanent residence abroad prior to September 22, 1922.
Title 22: Foreign Relations
PART 51—PASSPORTS
Subpart C—Evidence of U.S. Citizenship or Nationality
Married Women
§ 51.45 Marriage to an alien prior to March 2, 1907.