This makes it sound as if there was a disk recovered from LA and that no disk was recovered in Missouri in April 1941.
On February 22, 1944 Franklin D. Roosevelt writes a DOUBLE TOP SECRET memo on White House stationary for "The special committee on non-terrestrial science and technology." Both the title and the content clearly allude to extraterrestrial life, the former using the word "non-terrestrial" and the latter talks about "coming to grips with the reality that our planet is not the only one harboring intelligent life the universe." Remarkably, the last four words are exactly the title of Sagan's book co-authored with the Soviet scientist Shklovsky. Clearly the situation was that we had recovered at least one craft by then, probably the Cape Girardeau crash of 1941, and came to realize the wealth of technology that lay there for the pickings. Apparently the "Special Committee on Non-terrestrial Science and Technology" had been working some time in order to define a clear action. Dr. Bush had presumably presented a proposal from the Committee for an aggressive separate program to apply "non-terrestrial know how" to the war effort, but FDR thought that it would threaten the atomic bomb program. Thus, he carefully avoids saying "no," but says that we will "take every advantage of such wonders that have come to us" after we have won the war. Very gracious letter. The classification "double top secret" was a legitimate one.
Majestic 12 In 1988, two FBI offices received similar versions of a memo titled “Operation Majestic-12…” claiming to be highly classified government document. The memo appeared to be a briefing for newly-elected President Eisenhower on a secret committee created to exploit a recovery of an extra-terrestrial aircraft and cover-up this work from public examination. An Air Force investigation determined the document to be a fake.