Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms
sfgov.org/march-3-2020-election-results-detailed-reports Big zip files of .tif images, 32k-320k per ballot (3424x1728 handmarked, or 2188x1711 from ballot