Mormon History, Aug 16, 1845

[Nauvoo Temple] Orson Hyde posted a notice in New York Messenger ask for donations for the canvas for the tabernacle. If he received more money than needed, he stated the excess would be applied towards the temple.
Hosea Stout wrote, "It was decided that there would be a guard kept night and day around the temple, and that no stranger be allowed to come within the square of the temple lot, and also that there be four large lanterns made for the purpose and placed about 25 feet from each corner of the [Nauvoo] temple, to keep a light by night for the convenience of the guard."

[source: Brown, Lisle (compiler), Chronology of the Construction, Destruction and Reconstruction of the Nauvoo Temple]