eas Playfair Cipher
eas Phenolphthalein
eas Silver Nitrate
eas invisible ink
eas 1T4
eas 1R5
eas 6SQ7
eas MI9 cigarette case
eas Abwehr power tube
eas counterparts
eas battery-powered
eas Silk Maps
eas Time Pencil
eas sabotage
eas Secret Writing
eas Fifth Column
eas Violette Szabo
eas Prosper network
eas code named Denise
eas parachute
eas operation whitebeam
eas Denver Sandwich Bar
eas Nord-Express
eas Wagons-Lits
eas Nizza-Express
eas Kharkov-Sevastopol Express
eas Great Seal Bug
eas Osobnjak 8
eas Room 40
eas Periscope
eas ANB-M-C1
eas Dictabelt