Post Office, Outline Small 320×237 Medium 640×474 Large 1024×758 Download Tiff Original 3000×2221 | (295.9 KB) Download EPS Vector 387.0 KB Description This sign is used to indicate that a post office is located nearby. Keywords envelope, kservoutline, letter, mail, post office, recreational sign Galleries Post Office, Service Signs Source: Federal Highway Administration Manual on Uniform Traffic Control Devices for Streets and Highways, 2003 Edition (including 2004 and 2007 revisions) (Washington, DC: United States Department of Transportation, 2007)