If you are looking for a specific "File 1001.pdf" from a government site like the IRS : Irs-pdf | Internal Revenue Service Irs-pdf | Internal Revenue Service. IRS (.gov)
Defines terms like "writings," "recordings," and "photographs," and distinguishes between an "original" and a "duplicate" for evidence purposes. Download File 1001.pdf
A guidance document used by employees to ensure consistent records classification and retention. If you are looking for a specific "File 1001
Using IRS forms, instructions, publications and other item files " and "photographs
In legal contexts, "1001" often refers to the found in the Federal Rules of Evidence.