By the end of 1940, Loomis had assembled dozens of the country’s best engineers and physicists inside an anonymous building at MIT.
Eventually, Loomis group would become the RadLab and occupy several spaces including legendary Building 20 at MIT.
The story of Building 20 is covered in Messy by Tim Harford (https://amzn.to/2IDSFVG) and Deep Work, by Cal Newport (https://amzn.to/2Dx9hdD).