June 22, 2015 updates:
Added this current page detailing updates.
Added page of comments by readers.
Changed the sentence reading:
“She believed so strongly in the importance of early childhood education that she even worked as a kindergarten teacher for a time in the mid-1920s.”
“She believed so strongly in the importance of early childhood education that she opened her own kindergarten in the mid-1920s.”
This more accurately reflects the information supplied to me by Gerry Brent.
Added further information to source note 26 about Szilard's invention of the electron microscope, and his proposal of it to Dennis Gabor.
Added further information to source note 73 about whether Szilard suffered a bad cold that prevented him from attending Ernest Rutherford's “moonshine” speech in September 1933.