Title 36: Section 60.3Archived 2007-02-10 at the Wayback Machine, Parks Forests and Public Property, Chapter One, Part 60. National Register of Historic Places. Retrieved February 19, 2007.
Early ModelsArchived 2007-02-05 at the Wayback Machine, Working on the Past in Local Historic Districts, National Park Service. Retrieved February 20, 2007.
"History of Local Historic Districts"(PDF). Establishing Local Historic Districts. Massachusetts Historical Commission. Archived(PDF) from the original on October 16, 2012. Retrieved September 24, 2013.
"History of Local Historic Districts"(PDF). Establishing Local Historic Districts. Massachusetts Historical Commission. Archived(PDF) from the original on October 16, 2012. Retrieved September 24, 2013.
Title 36: Section 60.3Archived 2007-02-10 at the Wayback Machine, Parks Forests and Public Property, Chapter One, Part 60. National Register of Historic Places. Retrieved February 19, 2007.
Early ModelsArchived 2007-02-05 at the Wayback Machine, Working on the Past in Local Historic Districts, National Park Service. Retrieved February 20, 2007.