Insects infest crops in various parts of United States. Apparatus for spraying poison in the forest. Storehouses and shop facility for the spraying of poison in the forest. Men bring auxiliary pumps to water for spraying poison.
Insects infest crops in various parts of United States. Poison mixed with water in spray tanks. Long hoses laid for spraying poison on infested trees. Men spray poison.
An aircraft on field in United States. The airplane in flight and it dusts insecticide poison over the forest to combat gypsy moths. Area dusted with poison.
Men handle wood logs at a forest in United States. Men spray poison on the infested trees. Men discuss amongst themselves in office. Information on brown tail and gypsy moths framed on a wall.
Documentary titled 'A Prophecy Fulfilled', on the construction of telephone lines and growth of the telephone system. Views of serveral very early telephone models and telephone switchboard systems. Men talk on a primitive telephone system in United States. Scene of a chaotic telephone switchboard operator room staffed by teenage boys or young men. Pictorial view of telephone poles and lines. Picture of Alexander Graham Bell and his prophecy. Telephone poles and lines scattered across a country side.
Pictures show laying of underground telephone cables using a railroad car. Hand shows primitive telephone cables. A modern '1212 Pairs 2424 Wires' type of telephone cable. Man work on underground telephone cables. Men near a manhole lay underground telephone cable. A network of underground telephone lines. Man in switchboard office connects various telephone lines.