41. Dairy Queen : mailman (01:01)

Date:
19uu
Main contributors:
Dairy Queen
Summary:
An advertisement for Dairy Queen ice cream in which a mailman takes a break to eat a banana split and laughs as a dog tries to perform tricks in order to eat some of the ice cream.

42. Dairy Queen : teen idol (01:01)

Date:
19uu
Main contributors:
Dairy Queen
Summary:
An advertisement for Dairy Queen ice cream in which a Monkees-esque teen idol runs from a group of fans and travels to the Dairy Queen and feels refreshed.

50. Right of way (07:35)

Date:
1943
Main contributors:
Eastman, Joseph B. (Joseph Bartlett), 1882-1944
Summary:
Follows a troop train, a freight train, and a truck rushing to deliver men and supplies to a ship convoy in 1943. Explains the reasons for transportation delays and the shortage of goods in wartime. This film was intended to promote understanding and support of the war effort despite inconveniences on the home front.

52. Pacific Canada (10:36)

Date:
1943
Main contributors:
Erpi Classroom Films Inc., J. Russell Smith
Summary:
Orients Pacific Canada with the rest of the Dominion and the United States. Traces routes of discovery and exploration, and portrays the settling of the region, with emphasis on the part played by climate and by transcontinental and ocean transportation. Other sequences are on fishing, lumbering, agriculture, mining, and smelting.

53. Receiving radio messages (principles of radio - part two) (10:48)

Date:
1943
Main contributors:
Erpi Classroom Films Inc., Wilbur L. Beauchamp, Ph.D., The University of Chicago Physical Sciences Series
Summary:
Through animated drawings, presents the basic principles of radio reception. Explains the function of the variable condenser and emphasizes mutual inductance, self inductance, and resonance. Reveals through simple demonstrations how a crystal detects radio waves, and how an earphone produces audible sound waves.

54. Sound recording and reproduction (sound on film) (11:03)

Date:
1943
Main contributors:
Erpi Classroom Films, Inc.
Summary:
Through animated drawings explains the principles of recording and reproducing sound on film. Through demonstrations reveals the functions of the microphone and the light valve and shows how the motion picture projector reproduces sound from a sound track. An instructional sound film.