I’d taken Professor Poppitz’s “Relativistic Electrodynamics” course in 2011, and wrote up my notes and problem set solutions in latex at that point.
That was only the second course that I tried this in, and was much less structured than any of the subsequent class notes collections that I produced later. I now put problems with the chapter material using the latex exercise environment, and have now retrofitted the use of that package into my old phy450 notes.
I’ve also moved some of the tutorial content into the problem sections, and the rest into the appendix. The result is a much more streamlined layout than was the case when I took the course originally. There are still no figures, nor is there any index. Only my later class notes collections have those and it’s a fair amount of work to retrofit that. The whole thing still needs a complete review (and probably a rewrite).