Publishers
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i5 Publishing
http://www.i5publishing.com/
Icon Books
http://www.iconbooks.com/
Ig Publishing
http://www.igpub.com/Ig Publishing
Image Continuum Press
http://www.cbsd.com/pubdetail.aspx?id=286
Imbrifex Books
imbrifex.com
Immedium
http://www.immedium.com/
Imperfect Publishing
http://www.imperfectpublishing.com/
In Easy Steps Limited
http://www.ineasysteps.com/
Invisible Publishing
https://invisiblepublishing.com/invisiblog/
Iron Circus Comics
ironcircus.com/