Lub unsolved paub tsis meej: Tsev Neeg Cowden tua neeg hauv Copper, Oregon
Cov tsev neeg Cowden tua neeg tau raug piav qhia tias yog ib qho ntawm Oregon qhov txaus ntshai tshaj plaws thiab tsis meej pem. Cov ntaub ntawv tau txais kev saib xyuas thoob tebchaws thaum nws tshwm sim thiab tau txuas ntxiv mus ntes cov pej xeem nyiam ntau xyoo.