Mary Had A Little Lamb

David Slauenwhite finds this mathematical roadsign in Sterling, is the birth-place of the childrens song Mary Had a Little Lamb.



Mr. Slauenwhites months of effort resulted in the following hidden mathematical gem.

$$\bigl({{140-62}\over{13}}-3\bigr)!=6$$

This sign is west of Sterling, Massachusetts at the junction of route 62 and 140.