https://theconversation.com/in-a-digital-archive-of-fugitive-slave-ads-a-new-portrait-of-slavery-emerges-55263?utm_medium=email&utm_campaign=Latest+from+The+Conversation+for+May+17+2016+-+4872&utm_content=Latest+from+The+Conversation+for+May+17+2016+-+4872+CID_7b219445edd791ffda0681591267458a&utm_source=campaign_monitor_us&utm_term=In+a+digital+archive+of+fugitive+slave+ads+a+new+portrait+of+slavery+emerges