One highlight of the show was the largest to-date installation of incandescent light bulbs, having been recently invented by Thomas Edison (a resident of Louisville sixteen years before), to bring light to the exposition in the nighttime. 4,600 lamps, more than all the lamps installed in New York City at that time, were used.
George H. Yater writes in his book Two Hundred Years at the Fall of the Ohio:
“
The Exposition was the first large space lighted by incandescence and many electrical pioneers felt that the Louisville success did more to stimulate the growth of interior electric lighting than any other Edison plant.
”
"Birds-eye view of Louisville from the river front and Southern Exposition, 1883" by William F. Clarke
References
Yater, George H. (1987). Two Hundred Years at the Fall of the Ohio: A History of Louisville and Jefferson County, 2nd edition, Filson Club, Incorporated.