Dear categorists, I finally found a copy of Lawvere's 1962 preprint, thanks to the assistance of Kirk Sturtz. I'd like to thank you all for your help in locating it. For the record, there is apparently a photocopy of it in Gian-Carlo Rota's papers in the American Institute of Mathematics library: http://www.aimath.org/library/library.cgi?database=reprints;mode=display;Tit... Kirk kindly sent me a scanned copy of this photocopy (with Kirk's own annotations). Cheers, Jeremy On 13 Jun 2011, at 22:28, Jeremy Gibbons wrote:

Dear all,

I sent the following request a few months ago, looking for a "preprint" of Lawvere's from 1962. I'm not the only one interested - I got five replies, off-list, of the form "If you find it, could I have a copy too, please?"

I thought I would try one last time. My paper that cites this has been accepted for publication, and I'm doing due diligence by trying my best to track down original sources!

Does anyone know where I can find a copy?

Thanks again, Jeremy

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