በጣም የታዩ ከ Loucks and Norling Studios

Pete Roleum, an oil droplet, narrates a presentation about the history and uses of oil: He starts by introducing some of his relations, with...

Pioneering 3D promotional film about the Pennsylvania Railroad.

Traces the development of voice switching methods from the first system that utilized the wires of a burglar alarm unit in Boston in 1877, to the...

A grandfather is reluctant to use the new dial telephones coming to his town. Gives background of the change to dial service, and also illustrates...

How the mobile telephone system works, and how mobile phones can benefit businesses such as trucking and construction companies.