The Manhattan Project history with less emphasis on the 509th Composite Group

[25Kingman49]

Originally Posted by edwest2

I suggest those interested try the Defense Technical Information Center. Sometimes, certain documents ended up in logical places to look while others ended up in, let's say, out of the way places.

http://www.dtic.mil/dtic/about/about.html

Best,
Ed

Thank you, Ed.
Another great source of documents for this topic can be found/retrieved thru DoE OpenNet. Here are two different access points leading to documents but with a different introductory message.

https://www.osti.gov/opennet/manhattan_resources.jsp

and

https://www.osti.gov/opennet/forms.j...t/handout.html

A most useful tool. Test it out by typing in the name of someone say Groves for instance in the search window. Many documents are already available in PDF format. Those that are not can be easily requested from the holding archive, by following the instruction provided.