Included in the zip archive is an EPUB and MOBI format of the Kingdom of Solomon rulebook, version 2. The images and layout were optimized for my Kobo, but should look okay for other readers.
The Mobi was converted from the EPUB via calibre. I do not have a Kindle and haven't verified how it looks.
Thank you to James Mathe at Minion Games for allowing me to post this here.