[kem]

[ QUOTE ]
On the other hand I would grant you that 18 out of two hundred or 70 out of a thousand deserves consideration for more impressive stats. But I don't think you will find anything close to that.

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So I took a stab at this. My line of thinking was that my best bet was to use Professors' (obscure) last names.

First attempt: Goldwasser
From whitepages.com: 258 listings matching "Goldwasser, United States" (36 non-published listings)
From amazon.com: All 81 results for Goldwasser

Going through the list of 81, I manually (and maybe also erroneously) tried to remove all duplicate authors (does Amazon do this automatically? couldnt find it..) and also editors (although not stipulated to). The result:

Alan Goldwasser
Anita Goldwasser
Charles Goldwasser
Dan L. Goldwasser
Dorothy Goldwasser
Dovid Goldwasser
Edwin L Goldwasser
Henry Goldwasser
Israel Edwin Goldwasser
James Goldwasser
Jane Goldwasser
Janet Goldwasser
Julie Goldwasser
Katherine Goldwasser
M Goldwasser
Marvin Goldwasser
Michael S. Goldwasser
Orly Goldwasser
Samuel Marc Goldwasser
Shafi Goldwasser
Sharon Goldwasser
Temy Goldwasser
Thomas Goldwasser
Vivien Goldwasser

So 24 out of 258.

Doesn't quite beat your stat, but it's up there. If I have more free time, I'll play around with some other names.

Would be a harder (and perhaps more accurate challenge) if you stipulated that the authors must be alive and living in the United States, since presumably that's what the White Pages has listed.