Learning about vintage men's shirts

One thing that makes my hubs so great is that he's as obsessed as me with vintage stuff. He's crazy about men's vintage clothing, and has developed quite an expertise. He's always asking me "does it have a box hem?" or "is it Sanforized?" and honestly, until recently, I was pretty clueless.

So, I did what all nerds would do and I made a little cheat sheet. If you're interested in men's vintage clothing as a buyer or seller, you may find some tips here on dating and identifying your vintage shirts. And BTW, I didn't include this, but a box hem is apparently the type of hem that you don't tuck in -- it's straight hemmed all the way around.