Damn. Beat me to it.
But I expected nothing less. :) I have no idea how you do what you do.
For ER: I'm very old-fashioned when it comes to net searches. I like Yahoo, though Dogpile and Ixquick are fun. The site below, which provided the answer to your question, was #3 in the result list of this Yahoo search string: +book +1980 +saturn +spacecraft. I knew I'd get Cassini and Voyager, but I'd hoped that the string would be specific enough to get a unique item or two.
It did. I was lucky. Tom is amazing. I bet he got a unique result, or that it showed up as #1 on his result list.
For more fun, visit Ringmakers Of Saturn - What Is The Truth?
