Image Credits
The users Dbszabo1 and Gothicmamas-stock at Deviantart.com
The users Halmtier & Nighthawk101stock at Deviantart.com
Username Leosynapse at freeimages.com
The user Krappweis at sxc.hu.
The user LogicalXStock at Deviantart.com
The user tcone at Deviantart.com
Adam Ciesielski
Christopher Macsurak
Michael Lorenzo
NASA
japanvector.com
www.ac-illust.com
Book Sites
Archive.org
Project Gutenberg