# Where are Serre’s lectures at Collège de France to be found?

Having run into several references, at various places and occasions, to "Serre’s Course at Collège de France, 19xy-19xy+1" for various values of xy, I would genuinely like to know where these lectures are written down and archived.

Has there been an effort to preserve them in any form?

There are overviews of them in Serre’s collected work, but they have no references and don’t give full proofs.

• Would you be able to provide the overviews that you have found so far? I do not personally know the answer, but it would be helpful for me since I would be able to search via keywords – Victoria M Apr 17 at 14:41
• I initially thought that $19xy-19xy+1$ referred to a polynomial, and was very confused. – David Zhang Apr 27 at 2:20