- First Telegraph Message – Received in Dayton on September 17, 1847.
- First United Brethren Church – The first United Brethren church in Dayton was organized in 1847, in a small room in the Oregon Engine House. Their first church building was erected in 1852, at Sixth Street and Logan Street, later being purchased by the city and converted into a city prison.
- First Gas Company – Chartered February 4, 1848, by Daniel Beckel, Peter Voorhees, Daniel Stout, I.F. Howells, David Winter, J.D. Loomis, J.D. Phillips, Valentine Winters, John Mills and Daniel W. Weelock.
- First Hebrew congregation – The first Hebrew congregation was organized in 1850. They met in the old Dayton Bank building until 1863, when they purchased the old Baptist house of worship.
Dayton Unknown 