@crawfordsm oof, seems like their EPUB files are just images in order. They can hardly be called ebooks. (I tested two). On the ebook's page it says: "This e-book is compatible with most electronic devices. If you have problems with the EPUB version, we suggest trying the more widely accessible PDF version." PDF is more accessible? More like they don't know what accessible means. Otherwise I echo what others are saying, get them while it's hot! #NASA #accessibility #ebooks #EPUB