WEnvelope
WThe Coliseum–Duplex Envelope Company Building
WCover (philately)
WFlorence Mill
WFormular stationery
WGreen envelope
WIllustrated stamped envelope
WMulready stationery
WOverprinting
WPadded envelope
WPostal stationery
WRed envelope
WSacchettificio Monzese
WSealing wax
WSecurity bag
WWindowed envelope