Editing Millbourne, Pennsylvania (section)

=== Millbourne Mills ===
{{Main|Millbourne Mills (Pennsylvania)}}
[[File:Millbourne Mills.jpg|left|thumb|[[Millbourne Mills (Pennsylvania)|Millbourne Mills]] was located on present-day 63rd and [[Market Street (Philadelphia)|Market Streets]] in Millbourne.]]
The presence of a dam in Millbourne was first documented in an important deed issued by [[John Sellers (scientist)|John Sellers]] on August 27, 1752. [[John Sellers (scientist)|John Sellers]] recognized the potential of harnessing the waterpower of [[Cobbs Creek]], leading to the development of six sites along the waterway. These sites became essential for subsequent generations and contributed to the growth of [[Millbourne Mills (Pennsylvania)|Millbourne Mills]], first called Sellers Mills.

During this time, Millbourne was part of [[Darby Township, Delaware County, Pennsylvania|Darby Township]]. But in 1786, Millbourne was separated with other municipalities to form [[Upper Darby Township, Pennsylvania|Upper Darby Township]].<ref>{{Cite news |last1=Fine |first1=Mary Jane |last2=Wagenveld |first2=Mark |date=February 27, 1983 |title=DIV...IDED |pages=B01 |work=[[The Philadelphia Inquirer]]}}</ref>

Following [[John Sellers (scientist)|John Sellers]]' passing in 1804, his estate was inherited by his sons, with George receiving the majority of Millbourne. John Sellers II inherited the [[Gristmill|grist]] and [[sawmill]]s, which were already established before 1749. [[Millbourne Mills (Pennsylvania)|Millbourne Mills]] were initially operated by James Steel under the ownership of John Sellers Sr., and later by Thomas Steel, who took over in 1805.

In 1814, Thomas Steel acquired the Darby Mills and relocated, while John Sellers II. expanded the existing mill, resulting in the construction of the original section. John Sellers also owned a tannery on the Wayside farm in 1782. Additionally, an [[oil mill]] operated near the dam supplying water to [[Millbourne Mills (Pennsylvania)|Millbourne Mills]] until 1848.

The original [[gristmill]] underwent changes over time until its discontinuation. The new mill, built in 1814, was managed by John Sellers II. and featured advanced machinery. It achieved significant grain production, including [[wheat]], [[rye]], [[corn]], [[buckwheat]], and [[oat]]s.

The mill underwent expansions and upgrades, including a four-story addition in 1868. It utilized a [[Turbine|turbine wheel]] and later incorporated auxiliary [[Steam-power|steam power]]. John Sellers II passed away in 1878, and his sons continued operating [[Millbourne Mills (Pennsylvania)|Millbourne Mills]] with Thomas Steel. [[Millbourne Mills (Pennsylvania)|Millbourne Mills]] produced 250 barrels of Millbourne branded flour daily, with substantial wheat purchases and flour production in subsequent years.<ref name=":7" />