Campbell’s other strategy was to solicit ideas from writers in private correspondence. Heinlein encouraged this, and he also approached Will Jenkins, a brilliant inventor who wrote science fiction under the name Murray Leinster. Jenkins responded with “a very careful, long, and elaborate letter in which I listed all the imaginative gimmicks that I thought could help win the war,” and the three men formed an unofficial triumvirate for brainstorming, with Heinlein at the Navy Yard, Campbell at the magazine, and Jenkins at the Office of War Information.

