TITLE: Authorship of Grothendieck universes
QUESTION [28 upvotes]: Universes seem to first enter Grothendieck's work in SGA 1, which is credited to Grothendieck, and a lengthy discussion is in the chapter on Prefaisceaux (presheaves) in SGA 4.  That chapter is credited to Grothendieck and Verdier.  The appendix on them there is credited to N Bourbaki.  
Is there any known evidence of who actually wrote the appendix?

REPLY [5 votes]: In the D. Monk book "Introduction to Set Theory"
i find that the (first in the bibliography dates order)   definition of Universe (in set theory) come from: 
Tarski, Alfred (1938). "Über unerreichbare Kardinalzahlen"
Fundamenta Mathematicae 30: 68–89.
And it is exatly what SGA IV.1 reports. 
See also: http://en.wikipedia.org/wiki/Tarski%E2%80%93Grothendieck_set_theory