Mac OS X 10.9 Mavericks Available, Totally Free Upgrade, OpenGL 4.1 Support | Geeks3D
Mac OS X 10.9 Mavericks Basic + Practical Practical Techniques (Korean Edition): Lee Hyun-jun: 9788931552843: Amazon.com: Books
How to enable accessibility on Mac OSX 10.9 (Mavericks) and 10.10 (Yosemite), 10.11 (El Capitan), 10.12 (Sierra), 10.13 (High Sierra),10.14 (Mojave) : Support
Mac OS X 10.9 Mavericks review - The Verge
Mac OS X Mavericks: Prepare Your Mac for the upgrade to 10.9