You can now use your Delaware Library Card to log in to the Delaware page on Ancestry.com. By using your card you can have free access ONLY to the records Ancestry has digitized for the Delaware Public Archives. These records include births up to 1908, marriages up to 1933, deaths up to 1933, and naturalizations from 1796-1850. Now available: land records from 1677-1947, and will books from 1683-1947.
At present look in in the top center block " Delaware Public resources on ancestry.com"