Any reference to certain areas of books can be seen in the photos above. The sections are:
*Photo#10: Upper spine corner
*Photo#11: Lower spine corner
*Photo#12: Front cover top edge/outer corner
*Photo#13: Front cover bottom edge/outer corner
*Photo#14: Back cover top edge/outer corner
*Photo#15: Back cover bottom edge/outer corner
Abbreviations Glossary (I've been listing more and more of my books and thought this would save some time..)
*USC: Upper spine corner
*LSC: Lower spine corner
*FTOC: Front cover's top outer corner
*FBOC: Front cover's bottom outer corner
*BTOC: Back cover's top outer corner