Here’s a mash-up of posters from the Barnum Brothers, Sells Brothers, Ringling Brothers, and Horace Barre. At first glance they all appear to be from the same company. Monkey see monkey do!
All of these are from the late 1800s with the exception of the hot air balloon, which was made in the early 1900s. All of these are available as reproductions fro RetroSnapshots for about $22 each- not bad, huh?