Not specifically addressing your fields of interest but it is worth noting that at least one publisher is offering ebook versions with some of their hard bound books (on included CDs). They also offer substantial saving if you prefer to purchase just the ebook and have a rapidly growing selection (4-6 ebooks per month). Baen Books,
www.baen.com. While they carry a very small group of genre (Sci-Fi, Fantasy, and SF) they are influencing other publishers, five other publishers have joined their
www.webscription.net effort. Mostly smaller publishers so far but with Tor Books at least dabbling their toes in the waters. These books are non-DMR and available in multiple ebook formats. I personally purchase about $50 monthly from them in ebooks and look for their logo on the shelves of my local book stores. I have been doing this for several years and reading the ebooks on my PC as html files. I am buying my first ebook device, a Kindle 2, just to be able to read my collection in bed, at restaurants, and on vacation.
We can only hope that their efforts are seen as successful and this type of business model picked up by other publishers.
Amazon.com offers a "I'd like to read this book on Kindle" button which offers the opportunity to notify the publisher that ebook interest is growing. Contacting the publishers of your books yourself is certainly desirable since the more often the publishing houses hear the term the more likely they will be to look into the possibilities.
Good Luck
