In honor of National Library Week, the Gale Group is giving free access to their NewsVault Database for the period of April 10th-April 24th. This resource has both US and UK newspapers from the 17th century onwards. They also are giving free access to their Slavery and Anti-Slavery: A Transitional Archive as well.
Slavery and Anti-Slavery: A Transitional Archive
Thanks to Ladonna Garner for the link.