a. 1850 census of USA. Delaware. Kent. Digital images. familysearch.org.
b. Delaware, USA. DEATH Certificates.
c. Hollywood Cemetary (Harrington, Kent, Delaware, USA). Grave markers.
1. Title 1850 Census of USA, Delaware, Kent; Online Imagesa; Page Milford and Mispillion Hundred - Page 101; Text https://familysearch.org/ark:/61903/3:1:S3HT-6XQC-JYJ; [Source Record]
2. Title Delaware, USA, DEATH Certificatesb; Source Repository Citation, Repository FamilySearch.org [Repository]; Page Sipple, James (1847-1912); Text https://familysearch.org/ark:/61903/3:1:S3HY-DRBQ-SMC; [Source Record]
3. Title Hollywood Cemetary (Harrington, Kent, Delaware, USA), Grave Markersc; Page Sipple, William L (1850-1921); Text http://image2.findagrave.com/photos/2011/136/35960687_130562880123.jpg; [Source Record]
4. Title Delaware, USA, DEATH Certificatesb; Source Repository Citation, Repository FamilySearch.org [Repository]; Page Sipple, William Luff (1850-1921); Text https://familysearch.org/ark:/61903/3:1:S3HT-D4M3-CNB; [Source Record]
5. Title Delaware, USA, DEATH Certificatesb; Source Repository Citation, Repository FamilySearch.org [Repository]; Page Sipple, Charles F (1857-1946); Text https://familysearch.org/ark:/61903/3:1:S3HY-DYMS-DBF; [Source Record]