1 9 0 2 , ▁ 1 9 0 5 ▁and ▁ 1 9 0 9 . ▁In ▁ 1 8 8 7 , ▁nearly ▁ 2 , 6 0 0 ▁heads ▁belonging ▁to ▁Charles ▁Herbert ▁per ished ▁when ▁some ▁cow bo ys ▁burn ed ▁down ▁his ▁corr als ▁at ▁T ie ▁S iding , ▁Wy oming . ▁In ▁ 1 8 9 6 ▁in ▁Wy oming , ▁about ▁ 1 2 , 0 0 0 ▁sheep ▁were ▁sla ugh tered ▁in ▁a ▁single ▁night ▁by ▁being ▁driven ▁off ▁a ▁cl iff ▁near ▁North ▁Rock ▁Spr ings . ▁The ▁violence ▁reached ▁its ▁height ▁after ▁the ▁turn ▁of ▁the ▁century . ▁In ▁ 1 9 0 2 , ▁near ▁Th erm opol is , ▁Wy oming , ▁several ▁thousand ▁sheep ▁were ▁sla ugh tered ▁and ▁their ▁her ders ▁killed . ▁During ▁the ▁summer ▁of ▁ 1 9 0 5 , ▁ten ▁mask ed ▁men ▁attacked ▁a ▁sheep ▁camp ▁on ▁Sh ell ▁Creek , ▁in ▁the ▁Big ▁Horn ▁Bas in . ▁There ▁the ▁cow bo ys ▁club bed ▁about ▁ 4 , 0 0 0 ▁sheep , ▁out ▁of ▁ 7 , 0 0 0 , ▁burn ed ▁the ▁w ag ons ▁and ▁two ▁sheep ▁dogs . ▁The ▁owner ▁of ▁the ▁mass ac red ▁f lock , ▁Louis ▁A . ▁G ant z , ▁lost ▁about ▁$ 4 0 , 0 0 0 ▁as ▁a ▁result . ▁Out ▁of ▁all ▁the ▁sheep ▁ra ids , ▁the ▁most ▁serious ▁inc urs ion ▁was ▁the ▁Spring ▁Creek