Upvote:3
Unfortunately, I had trouble finding a source of evidence to link to you for this, but I recall that, in a high school US History class, we watched a documentary on the death penalty, and it covered the history of it. There were some hand-painted signs advertising the killing of a known convict, but I can't recall what period they were from. That said, the art looked to be from the early 20th century.
While I could not find this for you, I do recall the gist of the documentary. The killing of convicts was used for entertainment longer than the USA has been in existence. This ties into the same cultures which used to hold picnics in graveyards. People were generally more morbid about life, likely due to their average lives involving death (remember, most people were famers or hunters and death rates were much higher until only recently thanks to the advent of modern medicine), and this likely carried on well through this age; indeed, it only seems to have decreased following WWII, likely due to three generations in a row being exposed to mass casualties.
With later research, I did find two sources which may be on interest, however; pbs.org/wgbh/pages/frontline/shows/execution/readings/โฆ is a fairly good source. It mentions Eva Dugan, whose execution was public (and publicly botched), wherein a wikipedia search leads to a historical account in content.time.com/time/magazine/article/0,9171,738741,00.html which, sadly, requires subscribing to view