Cryptanalytic Equipment in operation

All photos from Record Group 457, box 804

Cryptanalytic equipment in use at Nebraska Avenue. Click to see larger image

Universal Plugboard Analytic Equipment

Universal Plugboard
Analytic Equipment

Operations Watch Office



Operations Watch Office

Mamba and more

Mamba and more

Maintenance Watch Office

Maintenance Watch Office

Cryptanalytic Equipment maintenance room

Cryptanalytic Equipment maintenance room

Main Deck, Nebraska Avenue

Main Deck, Nebraska Avenue

Sliding Grenade Attachment

Sliding Grenade Attachment

Pluggable Series

Pluggable Series

Special Projects Shop

Special Projects Shop

Loading wheels onto Duenna

Loading wheels onto Duenna

Duenna in operation

Duenna in operation

Gypsy, Topaz


Gypsy, Topaz

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