When opening a new tab in Google Chrome, this Google Chrome Extension will display the cover
Available at https://chrome.google.com/webstore/detail/new-tab-book-cover/gjfekmahnjjecpdjaebogepbmgogkdeb?hl=en&gl=US
Code is MIT License.
Cover image and other images are not available for open-source, sorry. Copyright 2014 Gregory Mazurek.