Dear Mr. Williams,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the series History of the Counter Intelligence Corps, 1959-1960 in the Records of the Army Staff (Record Group 319) that includes Volumes I-XXX of the publication. These records have not been digitized. For access to and information about them, please contact the National Archives at College Park - Textual Reference (RDT2) at firstname.lastname@example.org.
Next, we located the series Intelligence Document File Publications, 1946-1962 in Record Group 319 that contains some records related to the 66th Counter Intelligence Corps (CIC) Group. The series Report Files, 1947-1966 in Record Group 319 includes 22 files related to the 66th CIC, and the series Correspondence and History Files, 1947-1963 contains 1 file related to the 66th CIC. These records have not been digitized. Please contact RDT2 for assistance with them.
Plus, we located several other series in Record Group 319 that may be of interest to you, including the series Historical Manuscript Files, 1943-1948; the series Draft Publications and Related Correspondence, 1978-2000, and the series Organizational History Files, 1951-1970 that includes 35 file units pertaining to the 66th Intelligence Corps Group. These records have not been digitized. Please contact RDT2 with any questions you might have about them.
In addition, there is a brief administrative history of the 66th Counter Intelligence Corps (CIC) Group in the Catalog. And we located 72 file units relating to the 66th CIC in the Records of the Central Intelligence Agency (Record Group 263) and 1 file unit that includes 66th CIC in the General Records of the Department of State (Record Group 59). These records have been digitized and may be viewed using the Catalog.
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 RDT2. We apologize for this inconvenience and appreciate your understanding and patience.
We hope this information is helpful. Best of luck with your research!