36/12/20      Freer Gallery
  37/06/06      Communications
* 37/12/19      Drugs & Medicine
* 37/12/26      Christmas in the Colonies
* 38/01/02      The True DeSoto
* 38/01/09      Masters Behind The Mellon Masterpieces
* 38/01/16      Land Vs Weather
* 38/01/23      The Saga of the Sewing Machine
* 38/01/30      Whales - The Largest Mammals
* 38/02/06      The Four Elements Of Mechanics
* 38/02/13      Snakes, Big & Little
* 38/02/20      The Lincoln Legend
* 38/02/27      Electricity
* 38/03/06      Man Against Insects
  38/03/20      Rockets and Planets
  38/04/10      Introducing The Universe
  38/07/03      
  38/07/31  112 Potter's Art
  38/10/23  124 Great Engineering Feats: Boulder Dam
  38/12/12      The Story Of Petroleum
  39/02/26  142 Cave and Cliff Dwellers
  39/04/09  148 The Story Of First Ladies' Fashions
  39/05/28      The Story Of Salt
  39/07/02      The Story Of French Soldiers In The American Revolution
  39/07/16      Birds In The Service Of Man
  39/07/23      The Story Of Fossils
  39/09/17      The Story Of First Lady's Fashions
  39/10/01      The Story Of King Salmon
  39/10/08      The Story Of The Indians Who Met Columbus
  39/10/15      The Marvels Of Sound
  39/10/22      The Story Of Earthquakes
  39/10/29      The Story Of Concrete
  39/11/05      Germanna Ford: Crossroads Of History
  39/11/12      The Story Of The Great Apes
  39/11/19      Flying In Safety
  39/11/26      Our Debt To The Indians
  39/12/03      Exploring The Amazon For Plants
  39/12/10      Historic Gems
  39/12/17      Cortez The Conquerer
  39/12/31      The Story Of Printing
  40/01/07      The March Of Science
  40/01/14      The Railroads Today
  40/01/21      Harnessing Electromagnetism
  40/01/28      Volcanoes
  40/02/04      The American Bison
  40/02/11      The Story Of Hard Money
  40/02/18      The Evolution Of The Typewriter
  40/02/25      Pompeii Lives Again
  40/03/03      The Story Of Radium
  40/03/10      The Conquest Of Noise
  40/03/17      Our Changing Wildlife
  40/03/24      The Story Of Pharmacy
  40/03/31      Opening Of The Far West
  40/04/07      American Inventions
  40/04/14      Science In The Field
  40/04/21      The Story Of Dinosaurs
  40/04/28      The Story Of Corn
  40/05/05      The Old Timer
  40/05/12      Freer Gallery
  40/05/19      Voyages Of Charles Wilkes
  40/05/26      The Story Of Airships