This document summarizes key ideas from influential pioneers in the development of hypertext and digital media including Vannevar Bush, Ted Nelson, Douglas Engelbart, and Alan Kay. It discusses Bush's concept of the memex, an early vision of hypertext. It outlines Nelson's ideas about linking documents and his Xanadu project. It describes Engelbart's work developing the NLS system and introducing the mouse and graphical user interface. It shares Kay's vision of portable personal devices for storing and manipulating information like notebooks that could outpace human senses.