A storage container having circuitry for enabling remote location and retrieval of documents located in file folders operationally installed within said storage container, said storage container including: a base wall; a plurality of upstanding wall members (11, 12, 13, 14) connected to said base wall, said base wall and said plurality of upstanding wall members defining an enclosure volume; first and second electrically conductive support members (17, 18) each secured to at least one of said wall members in an essentially parallel and mutually spaced manner, the spacing between said first and second support members being sufficient to accommodate the ends of one or more file folders in mechanically supportive fashion; an electrical input connector (32,55) secured to one of said upstanding wall members and ohmically coupled to said first and second support members for providing file folder address signals supplied by a source to at least one of said first and second support members, so that said file folder address signals are coupled to any file folder supported by said support members; a storage container indicator; and an indicator control circuit for activating said storage container indicator when one of the one or more file folders operationally installed on said first and second electrically conductive support members has an address matching said file folder address signals and said storage container is electrically coupled to another storage container characterised in that said indicator control circuit includes a fixed resistance coupled between said electrical input connector (32,55) and one of said first and second electrically conductive support members (17, 18), sensing means for sensing the voltage value at the junction of said fixed resistance and said one of said first and second electrically conductive support members, said sensing means having an input coupled to said junction and an output, and a control unit having an input coupled to the output of said sensing means and an output coupled to said storage container indicator for activating said storage container indicator when said voltage value reaches a threshold value. a base wall; a plurality of upstanding wall members (11, 12, 13, 14) connected to said base wall, said base wall and said plurality of upstanding wall members defining an enclosure volume; first and second electrically conductive support members (17, 18) each secured to at least one of said wall members in an essentially parallel and mutually spaced manner, the spacing between said first and second support members being sufficient to accommodate the ends of one or more file folders in mechanically supportive fashion; an electrical input connector (32,55) secured to one of said upstanding wall members and ohmically coupled to said first and second support members for providing file folder address signals supplied by a source to at least one of said first and second support members, so that said file folder address signals are coupled to any file folder supported by said support members; a storage container indicator; and an indicator control circuit for activating said storage container indicator when one of the one or more file folders operationally installed on said first and second electrically conductive support members has an address matching said file folder address signals and said storage container is electrically coupled to another storage container characterised in that said indicator control circuit includes a fixed resistance coupled between said electrical input connector (32,55) and one of said first and second electrically conductive support members (17, 18), sensing means for sensing the voltage value at the junction of said fixed resistance and said one of said first and second electrically conductive support members, said sensing means having an input coupled to said junction and an output, and a control unit having an input coupled to the output of said sensing means and an output coupled to said storage container indicator for activating said storage container indicator when said voltage value reaches a threshold value.