Dear Mr. Ahlrichs,
Thank you for posting your question on History Hub!
We searched the National Archives Catalog for “Sievers, Karl.” The search produced the following results.
Please note that interrogation reports can be found in several different Record Groups including Records of the War Department General and Special Staffs (Record Group 165); Records of the Office of Strategic Services (Record Group 226); National Archives Collection of World War II War Crimes Records (Record Group 238); Records of the Central Intelligence Agency (Record Group 263); Records of the Army Staff (Record Group 319); and the Records of Headquarters, European Theater of Operations, United States Army (Record Group 498). In some cases, the interrogation reports are arranged alphabetically by surname of the prisoner and in other cases the reports are arranged by the camp in which the interrogation took place. We would suggest looking into the following indexes and series of records:
- Series “Indexes, Lists, and Record Cards Relating to Prisoners of War, Interrogation Reports, and Correspondence Concerning Prisoners of War, ca. 1942 - ca. 1946” (Record Group 165)
- Microfilm pamphlets for interrogation reports located in Record Group 238 on Microfilm Publications M1270 “Interrogation Records Prepared for War Crimes Proceedings at Nuernberg, 1945-1947” and M1019 “Records of the United States Nuernberg War Crimes Trials Interrogations, 1946-1949.” Finding aids to these microfilm publications can be viewed at: https://www.archives.gov/research/captured-german-records/microfilm/m1270 and http://www.archives.gov/research/captured-german-records/microfilm/m1019.pdf. We were able to locate Karl Sievers’ name on M1270 Microfilm Publication. According to this publications, Sievers was interrogated at the 7th Army Interrogation Center.
- Series “First Release of Name Files Under the Nazi War Crimes and Japanese Imperial Government Disclosure Acts, ca. 9/18/1947-1999” (Record Group 263) and series “Second Release of Name Files Under the Nazi War Crimes and Japanese Imperial Government Disclosure Acts, ca. 1981-ca. 2002” (Record Group 263). We were unable to locate any files relevant to your inquiry.
- Series “Intelligence and Investigative Dossiers Personal Files, ca. 1977-ca. 2004” (Record Group 319) and series “Selected Printouts of Digital Intelligence and Investigative Dossiers" (Record Group 319). We were not able to locate any files relating to Karl Sievers.
- Series “European Name Index to the Series ‘Case Files, 1944-1949’” (Record Group 153). There were some index cards for “Sievers,” but not specifically “Karl Sievers.”
- Series “Index to War Crimes Case Files, 1947-1947” (Record Group 549).
As indicated in the M1270 Microfilm Publication, Karl Sievers was interrogated by the 7th Army. Hence, we would suggest checking the records of the 7th Army Interrogation Center. Please note that the records are not indexed by last name of the interrogated individual but rather typically by the unit that interrogated a specific individual and thereunder generally chronologically by date of interrogation or by report number. There are several series of interrogation reports of the Seventh Army located in Record Group 498 [Headquarters, European Theater of Operations, U.S. Army (World War II)] that might be of interest to you including: “Prisoner Interrogation Reports, 8/16/1944-12/31/1944,” “Interrogation Reports, 1/2/1945-3/31/1945,” “Special Interrogation Reports, 4/1945-12/1945,” and “Interrogation Reports and Other Records, 11/1944-12/1945.”
Other series of records of the Seventh Army Interrogation Center include: “Daily Status Reports, 5/1945-10/1945,” “Weekly Status Reports, 6/1945-10/1945,” “Final Interrogation Reports, 6/22/1945-10/18/1945,” “Preliminary Interrogation Reports, 6/20/1945-10/8/1945,” “Interrogation and Intelligence Reports, 10/1944-10/1945,” and “Interrogation Reports, 1945.”
We hope this information is helpful. Best of luck with your research!