32. Grinding multiple-point carbide tools (19:54)

Date:
1945
Summary:
Shows how to remove blades from inserted-blade type cutter; how to off-hand grind individual teeth; how to reassemble and align cutter blades; how to circle grind; how to surface grind all tooth-relief angles; how to finish surfaces and edges by honing; and how to inspect resharpened cutters.

33. Grinding single-point carbide tools (25:42)

Date:
1945
Summary:
Shows how to prepare the wheel for grinding; how to semi-finish and finish-grind a dull tool; how to rough-grind a chipped or broken tip; how to grind a newly brazed tool; and how to grind a chip breaker.

34. Ground controlled approach (32:47)

Date:
1944
Summary:
Shows in detail how a plane is directed to landing by the ground controlled approach team. Illustrates the principles of operation of the system, and shows the members of the GCA team in action.

35. Group ways of channelizing aggression (28:58)

Date:
1958
Summary:
The methods of directing and using aggression in children are demonstrated in studies of the Americans of the continental United States, the Kwoma of New Guinea, and the Alorese of the Dutch East Indies. We move from the creation of frustration in children through the expression of aggressive responses to the various ways the aggressive responses are directed and utilized. Dr. Bullock’s narration is closely linked to dance action and original musical effects. The types of stimuli that frustrate children are explained. As each example is followed to its logical end of aggressive behavior, one can understand the hit-and-run tactics of the Kwoma, the competitive spirit of the American, and the inferior and helpless feeling of the Alorese. The battle scenes presented at the end of the Kwoma and Alorese groups throw our concept of war into a new mental perspective.

36. Grouse of the grasslands (10:39)

Date:
1950
Summary:
Shows close-ups of the grouse as found in its wild state on the prairies and open farm lands of Missouri, including its habits and natural sounds. Shows a battle between two male grouse, then a courtship. Concludes with a plea to preserve nature's creatures in their proper balance.

37. High temperature research (18:24)

Date:
1963
Summary:
Describes various phases of high temperature research, giving examples of compounds being used, goals of the research, and some results to date. Discusses procedures being used, with emphasis on procedures with titanium sulfide.

38. History brought to life (10:01)

Date:
1950
Summary:
One in a series of twelve, one-reel films designed to present behind-the scenes activities of the motion picture industry. This film describes the breadth of research which goes into authenticating details of historical motion pictures, illustrated by scenes of the storming of the Bastille and famous volcanic eruptions. Pictures Marco Polo, Cleopatra, Thomas Edison, Louis Pasteur, Johann Strauss, and other memorable figures in characteristic settings.

39. How machines help us (13:02)

Date:
1962
Summary:
Introduces basic principles of the lever, wheel and axle, pulley, inclined plane, wedge, and screw, and shows common usage of each. Shows the crowbar as a lever, and shows a doorknob as an example of a wheel and axle. Pictures the raising of the flag to illustrate the use of a pulley. Shows stairs as an example of an inclined plane, pictures carpenters driving nails as wedges, and presents the operation of an auto jack as an example of a screw.

40. Howdy Doody's Christmas (08:57)

Date:
1951
Summary:
It's Christmas Eve and Santa hasn't come yet, so Buffalo Bob Smith, Howdy, and Clarabell The Clown (Bob Keeshan soon-to-be "Captain Kangaroo") decide to take the Rocket Doodle as transportation and head for the North Pole to see what's happened to Santa. When they get there they find out that "Ugly Sam" (Dayton Allen later of "The Steve Allen Show") thinks that Santa is the "Bearded Bandit" and has captured him. So, it's up to Howdy and the Crew to prove differently.