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**On the sources of my book Moderne Algebra.**
*(English)*
Zbl 0297.01014

Summary: In December 1971, Garrett Birkhoff asked me to give my view on the main sources for my book. I wrote him a seven-page letter with two supplements. He intended to publish an edited version of my letter, with some commentary of his own, but in the course of our correspondence it turned out that both versions were unsatisfactory. I shall now present an extended record, explaining more fully how I came to write the book and what was the general situation in algebra at that time.

### MSC:

01A60 | History of mathematics in the 20th century |