Recs if you like Scurvy: How a Surgeon, a Mariner, and a Gentleman Solved the Greatest Medical Mystery of the Age of Sail...

microhistory: the intensive historical investigation of a well defined smaller unit of research (such as an event, community, individual or a settlement); it aspires to "ask large questions in small places"

For when you want something more ominous, macabre, or mysterious in taste that also centers on a deeply specific subject. Ranging from the occult to the supernatural to just plain weird and interesting. Expand your knowledge by reading these narrow glimpses into the past.

Books about one very specific thing throughout history (feel free to leave recs in the comments :) )