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Message:: [QUOTE="cartoongirl, post: 205096, member: 158"]thanks! i borrowed this from the antiques roadshow site... Maps Before 1800But if the map that our flea-market shopper found was made before 1800, as its 1784 date claims, it should also be printed on a different kind of paper. "Almost all maps made before 1800 used hand-laid paper," Chris says. This paper was made by hand rather than by machine, which came about later. It was made by pouring paper pulp into a wooden frame with a bottom of cross-hatched wire mesh, which would leave its pattern in the paper. "If you pick up a map and hold it up to the light you'll see a series of close-together thin lines crossed about every inch or so by a perpendicular line," Chris says. "Those are called chain marks. It looks a little like the weave of a rug." Later papers made in the 19th century by machine don't have these cross-hatches. i'll take a look see later and let you know what i find....<img src="styles/default/xenforo/smilies/smile.png" class="mceSmilie" alt=":)" unselectable="on" />[/QUOTE]