Okay, in an above message I mentioned that I emailed the author. I'm gobsmacked by her response

I deleted my email details etc from the following and have put them in the correct order (mine first):
To: Niffenegger, Audrey
Subject: ebooks: selling your books in e-formats?
Hi,
I'm a member of the MobileRead forum which is for those of us who prefer to read books in e-format. As yet, there is no legal way to purchase "The Time Traveler's Wife" in ebook format. Perhaps you could suggest to your agent/publisher that it be made available in various e formats for those of us who love our kindles, Sony ereaders, mobi's etc.
Just a suggestion,
Catherine
Dear Catherine,
I'm sorry, but I've devoted my life to physical books (I helped found the Columbia College Center for Book and Paper Arts) and e-books = dematerialised books. E-books imperil book design, typography, and other art forms that I care about. E-books are also not helpful to bookstores, and I love bookstores. So even though I understand that many people prefer e-books, I am not planning to issue my books in that form if I can avoid it. If that means I sell fewer books, so be it.
Thank you for your interest in my work, and for taking the time to write to me.
Regards,
Audrey Niffenegger
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