Time Machine Authors: Historic Era: Historic Theme: Subject: April/May 1984 | Volume 35, Issue 3 Time Machine (April/May 1984 | Volume: 35, Issue: 3) April/May 1984 | Volume 35, Issue 3 1784 Two Hundred Years Ago 1884 One Hundred Years Ago 1934 Fifty Years Ago Previous 1 Next Keywords