OSS Operations in Japan During World War II

Question

Greetings, I am researching OSS operational activity inside Japan during World War II. Where can I find documents containing information on Japanese HUMINT sources and also finished intelligence? 
 Many thanks in advance!

Textual Reference Branch, Archives II · Answer

Raytrain99 
 Thank you for posting your question on History Hub! The Textual Reference Archives II Branch (RR2RR) has custody of Records of the Office of Strategic Services (OSS) (Record Group 226). There are a variety of finding aids and indexes to assist with research in Record Group 226 including those arranged by personal name, topic, code name, branch, and directors office files. If you are able to identify specific names or code names for individuals that were involved with OSS operational activity inside Japan this may be the most efficient way to begin your research. For more information about OSS indexes please contact the National Archives at College Park - Textual Reference (RR2R) at archives2reference@nara.gov . Please provide as much detail as possible regarding your research in your request.

We will be happy to make the records and their finding aids available to you or your representative in the Textual Research Room (Room 2000) here at the National Archives at College Park, Maryland. For information about visiting, including how to schedule a visit, please see our website at https://www.archives.gov/college-park . 
 
 We hope this assists you with your research! Sincerely, Textual Reference Archives II Branch (RR2RR) [RR2RR 24-25710-SZ ]

Textual Reference Branch, Archives II · Answer

Raytrain99 
 Thank you for posting your question on History Hub! 
 
 The Textual Reference Archives II Branch (RR2RR) has also received your question via email and has responded to your request through email. While we have responded to your inquiry already, we did want to provide similar information here for your convenience. 
 The Textual Reference Archives II Branch (RR2RR) has custody of Records of the Office of Strategic Services (OSS) (Record Group 226). There are a variety of finding aids and indexes to assist with research in Record Group 226 including those arranged by personal name, topic, code name, branch, and directors office files. Unfortunately the information provided in your inquiry does not include information that we are able to use in searching our indexes for you.
 
 Since OSS records in our custody are widely dispersed, we cannot undertake the extensive research necessary to examine the records and identify the pertinent documents. We are pleased to assist researchers with their work but cannot perform substantive research for them. 
 
 We will be happy to make appropriate records available in our research rooms should you have an opportunity to visit the National Archives. If you are not able to visit another option is to hire a researcher to conduct research on your behalf. A list of private researchers who are familiar with National Archives facilities is available on our web site at https://www.archives.gov/research/hire-help/index.html . 
 
 The Textual Research Rooms at the National Archives in College Park, MD (Archives 2) are now using Eventbrite to schedule research appointments for the Textual Research Room and the Microfilm Reading Room. Advance research appointments are highly encouraged, but you may also conduct research as a walk-in. Research room hours are Monday-Friday, 9:00am-5:00pm. 
 
 Visit the Textual Research Room Appointments page if you are interested in accessing textual records. Visit the Microfilm Reading Room Appointments page if you are interested in viewing microfilm.

Navigate to Upcoming Events and click on the desired date

Click Register and complete the registration process

*If tickets for a particular room do not appear during registration, appointments for that day are sold out. We recommend checking back in the event of cancellations. 
 
 Please complete the online Researcher Orientation as well as the online researcher registration form before scheduling an appointment on Eventbrite.

We hope this assists you with your research! Sincerely, Textual Reference Archives II Branch (RR2RR) [RR2RR 24-27215-SZ]