I came across this collection of mugshots from the 20's. As I marveled at how beautiful they were, I started wondering what these guys used to shave. Not a bit of scruff in the bunch. http://twistedsifter.com/2011/05/vintage-mugshots-from-1920s-black-white/
Pretty cool. The female mugshots were interesting, too. And they actually mention razors a few times.