In FGA 3.V, there is a citation for



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> Mumford D. and Tate J., Séminaire de géométrie algébrique, Harvard University, Spring term 1962 (à paraître).
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This seems to be the same seminar mentioned by Grothendieck in a letter to M. Artin on the 23rd of February, 1963 (see footnote 2 of letter number 19, page 71, of [this digitisation](https://webusers.imj-prg.fr/%7Eleila.schneps/grothendieckcircle/Letters/AGMumford.pdf)), which says that



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> Lichtenbaum’s notes on the lectures by Grothendieck, Mumford and Tate have not been published.
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**Did these notes ever appear? Is there a better way to cite this seminar?**



Mumford–Tate 1962 "Algebraic geometry seminar" citation
I asked Steve Lichtenbaum, and he wrote "I started to write up the notes for the Grothendieck-Mumford seminar but then Grothendieck left and I never finished. The notes do not exist. They probably should not have been cited."


