Below you will find the solution for: For Christmas cards & bills alike these got their new +4 format in 1983 Jeopardy .
Since you already solved the question For Christmas cards & bills alike these got their new +4 format in 1983 which had the answer ZIP CODES, you can simply go back at the main post to check the other answers. You can do so by clicking the link here Jeopardy December 07 2023
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