Map construction

A map construction adapted to be unfolded for use in a single, continuous, manual movement and refolded in a single, continuous manual movement when desired, said map construction comprising:

• a. a foldable single sheet, matchbook-like cover;
• and
• b. a foldable, imperforate, paper sheet fastened by one corner thereof to said cover and folded in a first plurality of accordion folds from side-to-side to expose a free, unfolded corner for being grasped between the thumb and forefinger, and then folded in a second plurality of accordion folds from top to bottom, the number and size of said side-to-side and top-to-bottom folds being sufficient to reduce the size of said sheet to within the perimeter of said cover for being enclosed therein when said sheet is fully folded in a folded configuration wherein the perimeter of the folded sheet is the size of a single panel of the sheet defined by the intersection of the top-to-bottom and side-to-side folds, said folds being made in such manner as to maintain said free, unfolded corner in position to be grasped by the thumb and forefinger and pulled in a continuous movement diagonally against the direction of both the side-to-side and top-to-bottom folds simultaneously while holding the cover in the other hand, whereby the sheet is spread to its open position for use;
• and to close, by moving the sheet with the thumb and forefinger diagonally towards the cover to aid said sheet in reassuming its side-to-side and top-to-bottom folds for storage within said cover.