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During the Space Race, the US had a weight problem. It wanted to launch rockets into space, but their fuel just wasn't efficient enough. Toss in enough fuel to lift the rest of the rocket, and you wouldn't be able to lift all the heavy rocket fuel. With the Soviets having just launched Sputnik into space, what was the US to do?
Enter Mary Sherman Morgan.
She was an unlikely hero for the US Space program. She had no college education. She'd had a child out of wedlock (in the 40s!). But she was great at what she did - which was making explosives. Soon thereafter, she invented the rocket fuel Hydyne, which was instrumental in launching Explorer-1, a feat for which lead engineer Wernhner von Braun got most of the credit.
Being overlooked was just fine with Morgan, though. She actively avoided the limelight at every opportunity. This combination of her overwhelming humility and the top-secret nature of her work resulted in no newspaper being able to verify the obituary her son submitted after her death. "My mother," he said, "had done such a good job of erasing herself from existence by not allowing anybody to write about her... nobody could verify that she ever even existed."
Since then, her son has worked tirelessly to build a legacy for her - writing a book and a stage play, trying to get as much information declassified as he possibly can. The rest, he puts out for independent verification.
That's a devoted son for you. The book is available on Amazon here
Sources: Stuff Mom Never Told You, Wikipedia