Dear Ms. Weiss,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located 4 series titled Index to Passport Applications, 1906-1923; Passport Applications, 1/6/1906-3/31/1925; Passport Applications, 1914-1925; and Passport Applications for Declarants, 1907-1920 in the General Records of the Department of State (Record Group 59). Some records are digitized and available in the Catalog but not all. For access to and/or copies, please contact the National Archives at College Park - Textual Reference (RDT2) via email at firstname.lastname@example.org.
We hope this is helpful. Best of luck with your research!