# Alternatives to "Sketches of an Elephant" Volume 3

The third volume of Peter Johnstone's massive compendium of topos theory, "Sketches of an Elephant", is yet to be published. The volume is supposed to discuss cohomology and mathematical universes in the context of topos theory. While we wait for the publication of this volume, are there any alternative (hopefully just as comprehensive) references for the aforementioned subjects?

• Most of the material supposed to be in this last volume is only available in research paper at the present time. Basically one would need to give you different references for each subsection announced (and SGA4 would definitely be one of them, covering I guess some part of section $E3$) which might be a lot of work... Nov 21, 2016 at 10:42
• At second thought, this could be interesting to do nonetheless... Nov 21, 2016 at 10:43