This is a field puzzle. You are supposed to go the the posted coordinates and solve the cache using the sponsor bricks.
HOW THIS CACHE WORKS - When you get to the posted coordinates, look for the photo that matches the brick. There will be a missing letter/number. If the answer is a number, use that number in a coordinate string. Photo numbers will be grouped together in two letters. Let's say the brick you are looking for is R_an McKarick, you look for the brick and the missing letter is Y. Use the description and find what Y equals. If Y equals 7 that is the number you will use for the final coordinates. GET IT?
N 48 HG HG . XI HG OP
W 114 HG MJ . XI HG XI
PhotoOP / Russ _arson
PhotoHG / Rotary Club _010
PhotoXI / Vet Clinic on Wood Pole (406) _44 - 2888
PhotoMJ / Mr. Parker Class of 2000 Peter_on School
K = 8
S = 9
M = 5
C = 4
L = 3
P = 7
G = 9
To make sure you are at the right spot, Geochecker linked here.
FTF - DairyMedic + threshergirl 
STF - alpinerabbit 
TTF - JBraach 