File:1,000,000 volt x-ray equipment, Watertown Arsenal, US Army, c. 1939-1959, from the Digital Commonwealth - commonwealth 2n49vp064.jpg
![File:1,000,000 volt x-ray equipment, Watertown Arsenal, US Army, c. 1939-1959, from the Digital Commonwealth - commonwealth 2n49vp064.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a6/1%2C000%2C000_volt_x-ray_equipment%2C_Watertown_Arsenal%2C_US_Army%2C_c._1939-1959%2C_from_the_Digital_Commonwealth_-_commonwealth_2n49vp064.jpg/464px-1%2C000%2C000_volt_x-ray_equipment%2C_Watertown_Arsenal%2C_US_Army%2C_c._1939-1959%2C_from_the_Digital_Commonwealth_-_commonwealth_2n49vp064.jpg?20220812183959)
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