[5] During the 1972 United States Presidential Election, Harrison served as George McGovern's New England Campaign Coordinator.

[8] Harrison resigned from the bench in 2006 after the Office of Bar Counsel filed a petition for discipline against him.

[9] On February 13, 2006, the Board of Bar Overseers voted to recommend that Harrison's resignation be accepted as a disciplinary sanction.

On March 1, 2006, the Supreme Judicial Court for Suffolk County entered judgment accepting the respondent's affidavit of resignation as a disciplinary sanction.

[11] Outside politics Harrison worked in insurance and real estate sales and also as a high school football and lacrosse referee.