Well, ancestry has actually done something really, really fine.
They seem, in a lot of ways, to be rather clueless about proper genealogical research, but they sure do throw a lot of wonderful resources on the web (if you're willing to pay for them).
But these Draft registration cards take the cake.
I just wish they'd get Missouri up.
The great thing about them is that they cover about 95% of the adult male population in the US in the 1917-1918 time period. And they include birthdates and signatures. Sometimes the birthdates are wrong, but I'm using the signatures as best evidence of how these guys really spelled their names.