Presidential Souls can be purchased at the following locations:

Amazon:

https://www.amazon.com/Presidential-Souls-Lisa-Moulden-ebook/dp/B01GOX320G/ref=sr_1_2?ie=UTF8&qid=1465330376&sr=8-2&keywords=Presidential+Souls

Apple iBooks:

https://itunes.apple.com/us/book/id1121387197

Barnes and Noble:

http://www.barnesandnoble.com/w/presidential-souls-lisa-moulden/1123886610?ean=2940158134623

Google Play:

https://play.google.com/store/books/details/Lisa_Moulden_Presidential_Souls?id=3-RLDAAAQBAJ

Kobo:

https://store.kobobooks.com/en-us/ebook/presidential-souls