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CONELRAD
"CD Mark" symbols (usually simple white or red triangles) at CONELRAD's 640 and 1240 kHz frequencies were on the dials of most radios sold in the US b
"CD Mark" symbols (usually simple white or red triangles) at CONELRAD's 640 and 1240 kHz frequencies were on the dials of most radios sold in the US between 1953 and 1963.
Cold War-era CONELRAD poster.
Cold War-era CONELRAD poster.
Car radio with CONELRAD frequencies marked with small red marks
Car radio with CONELRAD frequencies marked with small red marks
First commercial transistor radio Regency TR-1 with small red dial markings
First commercial transistor radio Regency TR-1 with small red dial markings
Handbooks, guides, and bulletins showing the variety of opportunities for civilian defense volunteers during WWII
Handbooks, guides, and bulletins showing the variety of opportunities for civilian defense volunteers during WWII
This 1950 atomic bomb information card, meant for US military personnel, describes how in a number of respects an "atomic bomb ("A-bomb") is similar t
This 1950 atomic bomb information card, meant for US military personnel, describes how in a number of respects an "atomic bomb ("A-bomb") is similar to the effects of a large high explosive ("HE" bomb). While easily misinterpreted as dismissing the post-explosion radiation hazard, the pamphlet mentions the radiation hazard being over after the "debris has stopped falling" because then, the prompt radiation hazard has largely passed. Furthermore, written before the era of the
Civil defense literature such as Survival Under Atomic Attack was common during the Cold War Era.
Civil defense literature such as Survival Under Atomic Attack was common during the Cold War Era.
A Thunderbolt siren in Wisconsin
A Thunderbolt siren in Wisconsin