This document provides tips and resources for tracing the history of a house in Dover, New Hampshire. It outlines 5 paths of investigation: examining the setting and style of the house, speaking with neighbors, analyzing physical evidence, hiring a professional, and searching documentary evidence. Key resources mentioned include maps from 1827-1888, Sanborn fire insurance maps, city directories from 1830, deed records, federal censuses, obituaries, newspapers, and materials in the Dover Public Library's historical room.