I have added two more commentaries on selected Epistulae Morales of Seneca to my list: Schafer 2009 and Berti 2018. If anyone knows of others I have missed, please let me know: I have a feeling I’ve seen one or two others. Unless I’ve missed a lot of them, it appears that wave of Seneca commentaries has abated in the last few years. There are still a dozen letters that get no love from any commentator and are not included in the translated selections of Campbell (Penguin), Inwood (Clarendon Later Ancient Philosophers), or Fantham (Oxford World’s Classics): 13, 17, 20, 45, 69, 74, 81, 89, 98, 102, 109, and 111.
Lowell Edmunds’ list of commentaries on Odes of Pindar, which was the model for mine, is back on-line at a new address, thanks to his student Leon Walsh: link. See this Tweet for how that came about: link.
Some day I hope to find the time to transform my Seneca list into a data base for easier and more flexible searching, and add similar cross-references for at least two other often-selected corpora far too large to make convenient PDFs: the Greek Anthology and Martial.