locking into position with receptacles 30 and 31 carried on the base 15 at one end of its length the opposite end of the base 15 includes an end wall 32 against which the end of the panel 16 abuts to arrest slidable movement across the display area the abutment of the end of the panel coincides with the introduction of detents 28 and 29 into the receptacles 30 and 31 respectively in view of the foregoing it can be seen that the novel message carrier or holder of the present invention provides a means for carrying display messages that may be readily changed from time to time without the necessity of removing the carrier or holder from its supporting structure whether it be an automobile panel or the bumper of the automobile to install a message the window panel 16 is slid out of its retainment with the sidewalls of the base so as to expose the surface of the pad 21 it is unnecessary that the adhesive normally carried on the back side of bumper stickers be exposed the resiliency of the pad 21 will force the message sheet against the underside of the window panel once the window panel has been reintroduced into the base 15 this latter condition is achieved by inserting the end of the panel 16 into the slotted grooves 23 and 24 so that the panel may be slid across the full length of the base on top of the message material or sheet 20 upon abutment of the end of the panel with the end wall 32 the nubs 28 and 29 operating as detents will snap into the receptacles 30 and 31 for releasable or yieldable retention of the panel on the base while particular embodiments of the.