THE STRANGE CASE OF THE ALCHEMIST'S DAUGHTER by Theodora Goss ⭐⭐⭐⭐⭐
Great storytelling, brilliant characters, a novel narrative device that blends seamlessly into the story.
Brilliant mashup and reimagining of stories and characters from 18th and 19th century sf adventure and horror woven into a new and compelling story
and heroine.
I'm not sure if it was published with pages yellowed by age or if that's just my library's copy, but it certainly fits the mood.