To find the final stage of this multi-cache you must go back to the basics of education...Reading - Writing - Arithmetic. First you have to read the whole story on the Historical Marker at stage one. Then you need to write down answers to the nine questions below. After you answer those nine questions you must do some math to determine how to find the final stage. In order to log this cache as a find you must sign the log sheet in the geocache container.
Q-1: What year did Egan settle in Dakota? (A)
Q-2: What month was Mary murdered? (B)
Q-3: How many months after Mary's death was Egan hanged? (C)
Q-4: How many sons did Egan and Mary have that were born in Dakota? (D)
Q-5: How many years old was Catherine when Mary married Egan? (E)
Q-6: How many years did Mrs. Van Horn live with the following words ringing in her head? "The law may not reach the Van Horns, but the curse of God will" (F)
Q-7: The guilty person was how old when they made a confession? (G)
Q-8: How many daughters did Mary have? (H)
Q-9: What year was this geocache activated? (J)
J-A=Z
Z+3=Y
Y/B=W
C+D=V
V/E=U
U+F=T
T+G=S
S-H=R
Hx3=Q
W+Q=P
P+1=N
R/N=X
X=?
Almost there...Number of feet you travel from the first stage to find the final stage = X
One more to go...Direction you travel X number of feet = A (See Hint)