This Original Copy 50-page document (Bibliography on pages 49, 50), plus 21 Drawings, describes the theory of operation, design characteristics, mathematical analysis, and usage of the various newly emerging solid-state devices becoming available to logic-design engineers in the early 1960's, such as diodes, transistors, and silicon-controlled rectifiers (SCR's). This typewritten copy, on onion-skin, is the only known surviving copy. The Archival DVD Folder 1962_01_05_A SURVEY OF 4-LAYER DEVICES contains only a few JPEG-Image files: The Report Cover page, the 2-page introduction, and the Bibliography on pages 49 and 50