The introduction of the anthology begins with this:
Before Long Hidden was a book, it was a conversation. Really, it was many conversations, over the course of many different lives; these fed into one conversation in particular, a back-and-forth on Twitter in December 2012 about representations of African diasporic voices in historical speculative fiction, and the ways that history “written by the victors” demonizes and erases already marginalized stories. That discussion became an idea that became the book you’re about to read.
We grew up reading stories about people who weren’t much like us. Speculative fiction promised to take us to places where anything was possible, but the spaceship captains and valiant questers were always white, always straight, always cisgender, and almost always men. We tried to force ourselves into those boxes, but we never fit. When we looked for faces and thoughts like our own, we found orcs and deviants and villains. And we began to wonder why some people’s stories were told over and over, while ours were almost never even alluded to.
So, as you might have gathered, Long Hidden is an anthology meant to tell the stories of marginalized people in history (in speculative fashion). The setting varies, as well as the particular marginalized group, though the time period seemed to be most often between the 1600s and the 1800s. I’ll highlight a few of my favorites here.