First let me start of by saying you are amazing...
I have just breifly looked at the information you provided and am very intruged by what you have sent.

I looked at the link for Harry Clyde Johnson's WWII draft registration card and OMG, the signatures look like they match.

The first document he signed and the one you sent he signed 24 years later and OMG (said that already) they look like they match.....

WOW, cant wait to look into this further and see what I can see.

Again, your the best.