I have an article in Symmetry magazine about the path by which antimatter, a curiosity to physicists in the 1930s, .

I came across an exchange in the Heinlein Archives where John W. Campbell Jr. was persuading Heinlein to write a story about miners harvesting deadly "contraterrene" (what we would today call antimatter) asteroids for energy. Heinlein considered this and researched it for a while, then dropped the idea, so Campbell offered it to Jack Williamson. Williamson developed it into the "Seetee" series, adding his own ideas and a new word, "terraforming."

I unraveled the trail of scientific developments that preceded Campbell's inspiration. Heinlein looked like the perfect author to write this, since he had already done two nuclear physics stories, "Blowups Happen" and "Solution Unsatisfactory," for Campbell.

I also tracked down Williamson's for "Collision Orbit," which the editors of Symmetry treated with the respect due a historic laboratory notebook or scientific communication.

And I turned the whole tale into a lecture, which I have presented at a couple of conventions.

Fun fact: Williamson wrote the first story in a shack he built himself, .

So the Archives have provided the seed for one magazine article so far. I hope there are more.

My only disappointment is that they cropped the "about the author" , which Reidar Hahn went to considerable trouble to shoot.

Beyond cool. Do you have a higher res version of the picture?

Good work.

Fine article, and neat photo!

That's a nice piece of work! I'm probably not the only physics geek around here, but I had no idea that Heinlein had been offered the chance to do the first "antimatter" stories in SF before Jack Williamson did it. (I *miss* Williamson, BTW; his books are cool and when met him at a con many years ago, he was a joy to have there.)