"United States Passport Applications, 1795-1925," database with images, FamilySearch (https://familysearch.org/ark:/61903/3:1:3QS7-99D6-HXPH?cc=2185145&wc=3XCY-K68%3A1056306501%2C1056447401 : 4 September 2015), (M1490) Passport Applications, January 2, 1906 - March 31, 1925 > Roll 80, 1909 Mar-Apr, certificate no 721-1620 > image 950 of 962; citing NARA microfilm publications M1490 and M1372 (Washington, D.C.: National Archives and Records Administration, n.d.) Helen is listed on her father's passport application.