RF Choke reference info

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• 1947 National parts catalog - see page 9
• 1951 National catalog -  RF Choke page
• 1972 Millen catalog - see page 4
• An interesting conversation on RF Chokes
• RF Chokes for sale at RF Parts
• RF Chokes for sale at Surplus Sales
• Hammond RF Chokes

National - info from 1962 Arrow electronics catalog
(note - this lists number of pies which is useful for identifying unknown chokes)

National, Ohmite, Millen - info from 1965 Allied catalog
(note - this lists  coil resistance which is useful for identifying unknown chokes)