Re: first reference to "dualizing object"?

A referee attributed the notion of "dualizing object" in the context of *-autonomous to Grothendieck, but wasn't sure of the exact reference. Does somebody out there happen to know, where this was introduced first?

hi. there is probably a bit of duality in Grothendieck's TVS book. perhaps there is more in one of his functional analysis papers from the 50es, all referenced in the book. an even earlier source, with a hint of the chu construction, is George Mackey's work on barreled spaces, as pointed out to me by Bill Lawvere. -- dusko