Hi Donna, Are you sure of the surname for Harriet?According to the 1870 census, living with James and Harriet Leavitt in Athens, Somerset name is an Israel Drew, 82.I note that one of the children of James and Harriet is named Israel.In 1860, living in Athens with James are Israel Drew 73 and Esther Drew 70. Also in the household is an Esther Dearborn 44.
In 1850 in Athens ME are Israel and Esther Drew - both listed as 62, a male 22 (initials look like J. P. or J. L) and Harriet 19. There is an Israel Dearborn 11 also listed.
I'd be happy to mail you copies of these census images - just send me a private e-mail message with your mailing address.