Abstract: A notebook holder having stiff front and back cover members hinged together along corresponding edges thereof, so the front cover member may be swung away from the back cover member for notebook access and swung back for notebook protection, is provided along the inside margins of the free ends of such cover members with cooperative, intergripping strips of fabric of cocklebur type, such as the proprietary material "Velcro", so as to intergrip upon the pressing of the cover members closed by the use of only one hand and so as to maintain such holder in compact condition for easily and quickly slipping into a receiving holster by use of only the one hand. The holster has smooth interior walls to insure free entry for the notebook holder and is preferably adapted for securement to a waist belt in company with a ring retainer for a policeman's club.