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The Sears DIY book is from 1969 and cost 50 cents originally.

I don't know what the original price of the 1931 NEC was but, I paid $16 for it at the used book store. (Alan Nadon)

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These three Codes are all older than I am.

The one with the black cover was a hand out co-sponsored by Cutler Hammer, Square D, Trumbell and Westinghouse. In 1937 even electricians were hard pressed to be able to buy a Code book. They included insert pages of diagrams and references to their products to justify the expense.

Alan Nadon

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