Arnswalde is now in Poland and called Choszczno, województwo zachodniopomorskie.
An overview of available records can be found on Genealoger.
Addendum: Arnswalde is the county, the village name is Mienken.
Also found Hartwig and Baar in Mienken here.
Auswanderungskartei (emigration cards) located at Brandenburgishes Landeshauptarchiv in Potsdam, Germany or Family History Library microfiche #6109219-6109220 (54 total fiches).