Looking for a book like Confederates in the Attic- nonfiction about people obsessed with a particular historical era and/or historical reenactors

I love Confederates in the Attic by Tony Horwitz but am not really aware of anything quite like it, so if anyone has any ideas, would love to hear about them- any era/place in history is just fine as long as it focuses on the people who are very involved with it.

by WerewolfBarMitzvah09