Looking for good, unknown/ indie angel and demon books available in hard copy

[[deleted user]]

Hello,
I have been a fan of angel and demon books for a while, but I am running out of the more popular ones and ebooks are not my favorite thing. Does anyone know of some possibly indie/ self-published angel and demon books available in hard copy?

[Shera (Book Whispers)]

Sorry, the only ones I can think of are in ebook form.

[Arielle Rae]

is all about demons and angels