Dear Ms. Medlyn,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the series United States Consular Records for Jaffa, Palestine, 1872 - 1917 in the Records of the Foreign Service Posts of the Department of State (Record Group 84) that includes the file for Jerusalem - List of Jerusalem Emigrants, Leib (Dentist) Kahansky in Box 2. To request a copy of this file, please contact the National Archives at College Park - Textual Reference (RDT2) via email at firstname.lastname@example.org.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RDT1. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this is helpful. Best of luck with your research!