The first man-made canal in North America, Mother Brook, was created in Dedham in 1639. It linked the Charles River to the Neponset River. Although both are slow-moving rivers, they are at different elevations. The difference in elevation made the canal’s current swift enough to power several local mills.

In 1818, though citizens were still taxed for the support of ministers and other “public teachers of religion,” Dedham set a precedent toward the separation of church and state. Residents of the town selected a minister different than that chosen by the church members; the selection by residents was confirmed by the Supreme Judicial Court. This decision increased support for the disestablishment of the Congregational churches.

The local Endicott Estate burned to the ground in 1904 after the local volunteer fire department, responding to three separate fires burning simultaneously, reached the Endicott fire last. By the time they arrived, only ashes remained. It is said that the estate’s owner, Henry Bradford Endicott (also founder of the Endicott Johnson Corporation) took the burning of the homestead as a divine command to rebuild (which he did). The rebuilt Endicott Estate is listed on the National Register of Historic Places. The estate and surrounding grounds are open to the public, upholding Henry’s stepdaughter Katherine’s wish to use the house and property for “educational, civic, social and recreational purposes.”

In 1921, the historic Sacco and Vanzetti trial was held in the Norfolk County Courthouse in Dedham. Dedham Pottery is a cherished class of antiques, characterized by a distinctive crackle glaze, blue-and-white color scheme, and a frequent motif of rabbits and other animals. Dedham is sometimes called the “mother of towns” because 14 present-day communities were included within its original broad borders.