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Gerald Thurman found it on , Cornish, New Hampshire
Gerald Thurman, both sides are 21 way so far
Gerald Thurman brings another mathematically significant roadsign, this one from a rather historic location. This sign is right on the east side of the historic Cornish-Windsor Covered Bridge. It is a stunning covered bridge. There is some little type on the bottom of this sign. Under close scrutiny and with input from experts, it was determined that that read "NATL SITE". No numbers contained to disqualify this sign. The math here uses the great "double square" rule to find it's solution.
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The numbers on this sign
Three numbers.
- 12
- 16
- 10