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Dear Mr. James Bradley,
Thank you for posting your request to History Hub!
Information about Joint Task Force 3 and Operation Greenhouse as well as any other nuclear tests can be found from many of the same types of sources that we listed in our previous reply to you about Joint Task Force 132 and Operation Ivy. Major official sources on information include records in the National Archives, publications by the Department of Energy, and publications by the Defense Threat Reduction Agency and its predecessors.
Archival records at the National Archives are described in the National Archives Catalog which can be explored by using the key word searches such as Joint Task Force 3 and Operation Greenhouse. You can also locate relevant record series by looking at the record series linked to the organization authority files for Joint Task Force 3. (11/1949 - ca. 1952), Joint Task Force 3. Task Group 3.2 (Army). (1/12/1950 - 8/1/1951), Joint Task Force 3. Task Group 3.3 (Navy). ca. 1950-ca. 1951, and Joint Task Force 3. Task Group 3.4 (Air Force). ca. 1950-ca. 1951. When you have located a record series or file unit that you wish to access, you can email the archival unit listed in the contacts section of archival description. The majority of the textual records relating to Joint Task Force 3 and Operation Greenhouse are in the custody of the National Archives at College Park - Textual Reference (RDT2) which can be contacted via email at email@example.com. There are also photographic series in the custody of the National Archives at College Park - Still Pictures (RDSS) which can be contacted via email at firstname.lastname@example.org, as well as motion picture footage in the custody of the National Archives at College Park - Motion Pictures (RDSM) which can be contacted at email@example.com.
As we mentioned in our previous reply, the Harry S. Truman Presidential Library & Museum has an Atomic Bomb Collection with materials related to nuclear weapons testing at Enewetak (spelled as Eniwetok in the finding aid) and may also have other documents concerning Task Force 132 and Operation Ivy. For access to these records, contact firstname.lastname@example.org. The Eisenhower Presidential Library & Museum has a finding aid listing material in their collections relating to nuclear testing, to include Operation Greenhouse. Some of the items listed on the finding aid are still restricted. For questions about access to these records, contact email@example.com.
United States Nuclear Tests, July 1945 through September 1992, also mentioned in hour previous reply, is published by the U.S. Department of Energy and list information about every single American nuclear test, to include Operation Greenhouse. The Defense Threat Reduction Agency has posted NTPR Fact Sheets and U.S. Atmospheric Nuclear Test History Reports both of which include information about Operation Greenhouse.
We hope you find this information helpful. Best of luck with your research!
TO Jason Atkinson my sincere thank you for getting the information for OPERATION GREENHOUSE AND OPERATION IVY both of which I was a very young Signal Corps technician. well done