https://nonprofitlocator.org/organizations/pa/clarksville/141931024-knights-of-columbus https://nonprofitlocator.org/organizations/pa/clarksville/237017702-pta-pennsylvania-congress https://nonprofitlocator.org/organizations/pa/clarksville/251316807-clarksville-christian-church https://nonprofitlocator.org/organizations/pa/clarksville/251857503-clarksville-and-community-volunteer-fire-department https://nonprofitlocator.org/organizations/pa/clarksville/251864276-clarksville-missionary-church