He was formerly the manuscripts curator at the New England Historic Genealogical Society, and later librarian/archivist for the Massachusetts Society of Mayflower Descendants and editor of their journal, Mayflower Descendant. He was a Wiki Content Specialist creating research guides on Massachusetts, her counties, and Boston for FamilySearch.org and editor of The Descendants of Elder William Brewster, part 1 (2014), the last “silver” book to be published on the descendants of Mayflower passengers.

He was the fact-checker for the show Finding Your Roots with Henry Louis Gates Jr. on PBS. He has written several books and many articles. He has returned as the editor for Vermont Genealogy, the journal of the Genealogical Society of Vermont.

Drew is currently the genealogist for the Early Vermont Settlers to 1784 Study Project for the New England Historic Genealogical Society which has produced two published volumes so far with more than 725 sketches online. He is also a consulting editor for The New England Historical and Genealogical Register and theMayflower Descendant. He is slowly researching and writing a genealogy of the descendant of George Lamphere of Westerly, R.I., with several articles already published.