▁and ▁boundaries ▁changed ▁extens ively ▁over ▁the ▁next ▁ 6 0 ▁years ▁until ▁Tower ▁Rock ▁fell ▁under ▁the ▁federal ▁government ' s ▁juris diction ▁as ▁part ▁of ▁the ▁Mont ana ▁Territ ory , ▁which ▁was ▁organized ▁on ▁May ▁ 2 6 , ▁ 1 8 6 4 . ▁ ▁Tower ▁Rock ▁str add les ▁two ▁sections ▁of ▁land , ▁Section ▁ 3 5 , ▁T 1 7 N , ▁R 2 W ▁(" Section ▁ 3 5 ") ▁and ▁Section ▁ 3 6 , ▁T 1 7 N , ▁R 2 W ▁(" Section ▁ 3 6 "). ▁The ▁federal ▁government ▁granted ▁title ▁to ▁Section ▁ 3 5 ▁to ▁the ▁Northern ▁Pacific ▁Railway ▁in ▁May ▁ 1 8 7 0 . ▁The ▁Northern ▁Pacific ▁gave ▁its ▁title ▁back ▁to ▁the ▁state ▁in ▁a ▁land ▁swap ▁in ▁July ▁ 1 8 9 8 , ▁and ▁ ▁of ▁Section ▁ 3 5 ▁( including ▁a ▁portion ▁of ▁Tower ▁Rock ) ▁was ▁purchased ▁by ▁white ▁sett ler ▁Allen ▁Wood s ▁in ▁August ▁ 1 8 9 8 . ▁Wood s ▁raised ▁be ef ▁and ▁da iry ▁cattle ▁on ▁the ▁par cel ▁before ▁returning ▁title ▁to ▁the ▁state ▁in ▁July ▁ 1 9 0 4 . ▁Four ▁months ▁later , ▁his ▁brother , ▁George ▁Wood s , ▁purchased ▁the ▁ 1 6 0 - acre ▁tract . ▁Section ▁ 3 6 ▁was ▁designated ▁school ▁trust ▁land ▁by ▁the ▁federal ▁government ▁in ▁ 1 8 9 8 , ▁but ▁the ▁state ▁transferred ▁ ▁of ▁Section ▁ 3 6