This printable word search puzzle on the topic of US History (General) contains 13 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
Motion Picture Camera
Electric Generator
Carbon Telephone
Alkaline Battery
Lighting System
Ore Separator
Miner's Lamp
Vote Recorde
Fluoroscopy
Light Bulb
Phonograph
Telegraph
Cement