An introductory chapter describing the early science innovators researching Earth expansion, mainly during the second half of the 20th century. The chapter presents the work of: Carey, Creer, Egyed, Fairbridge, Heezen, Hilgenberg, Holmes, Irving, Jordan, King, Meservey, Runcorn, Tharp and several others. The chapter begins the book, The Hidden History of Earth Expansion, which continues with specially written chapters by some of the most well-known current researchers into Earth expansion: Hugh G. Owen, Cliff Ollier, Karl-Heinz Jacob, James Maxlow, Jan Koziar, Stefan Cwojdziñski, Carl Strutinski, Stephen W. Hurrell, John B. Eichler, William C. Erickson, David Noel, Zahid A. Khan, Ram Chandra Tewari, Vedat Shehu and Richard Guy, who recount their own personal histories. The book is widely available from most good bookshops in both hardback and paperback editions. Details available at publisher's website: http://www.oneoffpublishing.com/historyee.html