To designate the facility of the United States Postal Service located at 326 South Main Street in Princeton, Illinois, as the "Congressman Owen Lovejoy Post Office Building".

H.R. 5426 is a federal bill that officially renames the United States Post Office located at 326 South Main Street in Princeton, Illinois, as the "Congressman Owen Lovejoy Post Office Building." The legislation honors Owen Lovejoy, a prominent 19th-century abolitionist and congressman from Illinois who was a close ally of Abraham Lincoln. For local residents, this change primarily affects the building's formal name and signage, while mail delivery services and daily postal operations remain unaffected.