IPad – How to read ePubs on a first generation iPad

Following @bmike's suggestion in a comment I tried copying the book from iTunes on my Mac onto my iPhone. That worked. Having established that the copy of the book on my Mac worked, I unchecked the book in the book synchronization tab for my iPad in iTunes, synched, so that the book was removed from the iPad, then rechecked the box and synchronized again. The book then showed up in iBooks and I was able to access it.

That's an iPad 4 box. You can tell it by the ios5 wallapaper. The ipad 2 has a iOS 4 wallpaper.

Your 3rd point is true : Only the iPad 3 have the iCloud logo. Your 4th point if false. iPad 2 have also a silver Apple logo on their boxes.