Having finished
Lewis Carroll in Numberland, I can say that it turned out to be far more focused on his mathematical work than on his overall life. While it's still a biography in that it follows his life chronologically, and gives minimal observance to other major events of his childhood and professional career, these are presented largely to provide the context in which he worked on his math puzzles. And those puzzles are
replete throughout the book, which wouldn't be an issue if they weren't such expansive, complex problems!
I enjoy recreational math – among my friends, I refer to D&D as "a game of combat algebra" – but
Lewis Carroll in Numberland makes it very clear that Dodgson was operating several levels above what I'm capable of reaching, or at least not without some
serious remedial studying! As such, I don't recommend the book to anyone who isn't either a hardcore fan of his work (there's only a little
Alice-related material in the book) or a serious mathematicaphile.
In the meantime, on to
The Descent of Ishtar.