Samuel J. Sackett, The Missing Disclaimer (1954)
“ Well, he told himself, if Earth had space travel and was keeping it a secret, and if a magazine violated its security precautions and published a story about it, of course they'd discharge the editor. If it was a fiction magazine, that would be different. But a magazine that printed stories—some of them true, like the one about the capture of M-22....He called headquarters again, on his magneto-oscillophone. "Earth has space travel!" ”
