Abstract: The message holder comprises an envelope-like case which is preferably in the form of an elongated, open-faced sheath having a slot at one end thereof through which a plate-like message carrier can be bayoneted into the pocket of the sheath. A releasable detainer such as a tab on the one end portion of the sheath, operate to retain the carrier in the pocket while a message on the same is displayed through the opening in the face of the sheath. Meanwhile, a plurality of adhesive pads on the backside of the sheath enable it to be secured to a surface of a vehicle, to serve as a holder for bumper sticker-type messages.