The Book of Hallowe'en is a light treatment, but it was sort of a landmark in trying to be careful with the history.
If you are interested in the development of holiday traditions, Halloween in North America is a really interesting case because it went through drastic evolution from about the 1860s through 1970s -- harvest festival, cute children's parties, violent youth mobs, highly monitored parties, commercialization, adult-oriented horror.
If you want to read in detail, I'd start with Lisa Morton's books, Trick or Treat: A History of Halloween (2019) and The Halloween Encyclopedia 2e (2011).
If you are interested in the development of holiday traditions, Halloween in North America is a really interesting case because it went through drastic evolution from about the 1860s through 1970s -- harvest festival, cute children's parties, violent youth mobs, highly monitored parties, commercialization, adult-oriented horror.
If you want to read in detail, I'd start with Lisa Morton's books, Trick or Treat: A History of Halloween (2019) and The Halloween Encyclopedia 2e (2011).