I have written an eBook that will be sold in various formats (PDF, .mobi Kindle, ePub, etc.).
I went through the formal channel of registering a copyright application for the PDF version of the eBook with the U.S. Copyright Office at their website.
If I am going to be selling the same book in other formats (for sale on the Kindle, Nook, etc.), is it recommended that I also file a separate U.S. Copyright application with the U.S. Copyright Office for the Kindle version and ePub version of the eBook?
I'm not sure if I can include several graphic images that are in the PDF version in the Kindle version (they don't show up as well).
Instead of featuring the images (graphics) for the Kindle version, I may need to just have written text in place of those images.
So I guess that wouldn't constitute a major revision of the book?