↑ Harold B Clift, in United States. 1930 U.S. Census Population Schedule. (National Archives Microfilm Publication T626) Census Place: Upper Darby, Delaware, Pennsylvania; Roll: 2033; Page: 45A; Enumeration District: 144; Image: 778.0.
↑ Harold B Clift, in United States. 1920 U.S. Census Population Schedule. (National Archives Microfilm Publication T625) Census Place: Philadelphia Ward 34, Philadelphia, Pennsylvania; Roll: T625_1630; Page: 3A; Enumeration District: 1170; Image: 391.
↑ Harold H Clift, in United States. 1910 U.S. Census Population Schedule. (National Archives Microfilm Publication T624) Census Place: Philadelphia Ward 34, Philadelphia, Pennsylvania; Roll: T624_1405; Page: 2A; Enumeration District: 820; Image: 776.
↑ Harold B Clift, in United States. 1900 U.S. Census Population Schedule. (National Archives Microfilm Publication T623) Census Place: Philadelphia Ward 26, Philadelphia, Pennsylvania; Roll: T623 1469; Page: 18B; Enumeration District: 649.