Black-owned businesses
1829-1830: Pro-slavery mobs devastate Black Ohio communities
1830: Black groups expand free produce movement
1832: Chloe Spear: A story of 30 years in bondage
1834: White mobs riot, rampage in two cities
1842: "Under ground Rail-road" promoter transports hundreds to freedom
1863: Anti-Black racism fuels deadly draft riots
