Subject: history query
From: jim stasheff <jds@math.upenn.edu>
Date: Thu, 19 Jan 2006 14:56:15 -0500

Does anyone have any information on how Grothendieck's yoga for
deformation theory was transmitted to Schlessinger and Deligne?
or have a reference as to a published or cahier secret of Grothendieck
where it is outlined in his own words?

jim