Roots Television has a great online video taken from old movies of Memorial Day in 1920. This particular video shows Cornwall, New York although I suspect that similar scenes were found all over America.
This is a silent movie but is accompanied by music of the era. I was fascinated by the clothing styles of the bystanders, by all the folks on horseback, and by the dirt streets.
You can watch this bit of Americana at: http://www.rootstelevision.com/index.html?bcpid=7225568001&bclid=240119644&bctid=935463320.