This story was first published in March 1955 Galaxy and the etext was produced from the anthology "All the Traps of Earth and other stories". Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.
"If it didn't scare them off," Hudson pointed out. "The last few feet showed nothing but the inside of his throat."
Ex-ambassador Hudson looked unhappy. "I don't like the whole setup. As soon as we bring someone in, the news is sure to leak. And once the word gets out, there'll be guys lying in ambush for us--maybe even nations--scheming to steal the know-how, legally or violently. That's what scares me the most about those films I lost. Someone will find them and they may guess what it's all about, but I'm hoping they either won't believe it or can't manage to trace us."
"We could swear the hunting parties to secrecy," said Cooper.
"How could a sportsman keep still about the mounted head of a saber-tooth or a record piece of ivory?" And the same thing would apply to anyone we approached. Some university could raise dough to send a team of scientists back here and a movie company would cough up plenty to use this place as a location for a caveman epic. But it wouldn't be wo