And now... (drum roll, please)
I have a winner to announce! According to randomizer, the winner of the hardcover copy of Ada Byron Lovelace and the Thinking Machine by Laurie Wallmark is...
Congrats, Michael. Expect an email from me asking for your address. The book will be coming directly from Laurie. So if you want it autographed, I'm sure she'd be happy to do that for you.
Thanks to everyone who entered the giveaway.