The posted coordinates take you to a different monument in the Oak Lawn Cemetery. You will use information on E.D.s monument to determine the coordinates for the final.
N 43 22.ABC W 92 05.DEF
A = The last digit of E. D.’s birth year
B = The third digit of her death year
C = The number of letters in the second line of text
D = The third digit of her birth year
E = The number of letters in the second word of the 3rd line of text
F = The number of letters in her husband’s last name
You can validate your puzzle solution with certitude.