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A question to the experts: Of EGA I, there exist two editions:

1. the 1960 edition, which is available at http://www.numdam.org/item/?id=PMIHES_1960__4__5_0

2. the 1971 edition: mentioned under https://en.wikipedia.org/wiki/%C3%89l%C3%A9ments_de_g%C3%A9o...

As I see it, this translation seems to be of the (older) 1960 edition. Does anybody know the reason why the translators chose the 1960 edition over the 1971 edition as the translation source?

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Grothendieck left IHES in 1970, the second edition was after that. There was a lot of drama in the aftermath, essentially Grothendieck was not happy about how the more advanced material (SGA 4) he lectured on was kept private to the small group of students that attended the seminar and later reappeared in their publications without much acknowledgement. The eventual SGA 4.5 was a butchered version that only contained enough background to cover Deligne‘s proof.

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