The posted coordinates will take you to an historical plaque. From that plaque you can determine the final coordinates by garnering some information. Straight number plugging or alphanumerical equivilents. This is a simple 2-stage multi; the plaque, the posted coordinates, and the final, a short distance away.
The cache can be found at N 42° 58.ABC W 081° 14.DEF
A = The day of the month the plaque was erected
B = The last digit in the year the plaque was erected
C = The number of letters in the first word of the forth line of the body of the text
D = The number of letters in the last word of the second LINE of the second paragraph of the body of text following the word ‘soap’.
E = The addition of the digits of the year that the property was purchased by the Upper Thames River Conservation Authority divided by three
F = The numeric value of the middle initial of the name of the person who acquired the site in 1911
As an onsite check the addition of the 6 digits you are required to find should add up to 33.
Congratulations to zananoelis for the FTF