Here is an interesting time line.
19?? Creation of the first eBook.
1971 Creation of the first eBook collection (Project Gutenberg)
1992 Creation of first eBook store Book Stacks Unlimited.
1995 Amazon.com is launched
1996 Project Gutenberg eBook collection reaches 1000 titles.
1998 Several dedicated eBook readers launched: Cybook, Rocket eBook and SoftBook.
2000 Microsoft Reader software launched.
2002 Random House and HarperCollins start to sell digital versions of their titles/
2005 Amazon buys Mobipocket.
2007 Amazon launches Kindle.
2010 Apple launches iPad and Google launches Google eBooks.