A document storage and retrieval system comprising a plurality of physical networks for filing sets of physical sheets, scanners for converting said sequences of physical sheets to sequences of electronic images at sequences of date/time instances, and a plurality of electronic systems for filing said sequences of electronic images, each one of said date/time instances uniquely designating a matched pair of one of said physical sheets and one of said electronic images:
- (a) each of said physical systems including a primary physical repository and a plurality of secondary physical repositories therein, selected ranges of said sets of physical sheets corresponding to selected ranges of said date/time instances, said selected ranges of said physical sheets being contained by selected ones of said secondary physical repositories, said selected ones of said secondary physical repositories being visually marked with physical indicia corresponding to said selected ranges of said date/time instances;
- (b) each of said electronic systems presenting an electronic table representing a grid containing rows of electronic records and columns of electronic fields, said electronic fields including at least one primary electronic field and at least a plurality of secondary electronic fields, said primary field including a sequence of date/time entries that designate a corresponding sequence of said physical sheets and said electronic images, said secondary fields including arrangements of other entries that designate corresponding arrangements of other logical groups of said physical sheets and logical groups of said electronic images;
- (c) said logical groups of said physical sheets including virtual sets of said physical sheets that are intermingled throughout said secondary repositories so as to be unadapted for immediate physical compilation, the location in said secondary repositories of any one physical sheet being indicated by a record that includes the date/time instance by which said one physical sheet is uniquely identified, said logical groups of said electronic images being identified by logical groups of said electronic records so as to be adapted for immediate electronic compilation.