"I wish I could say this letter was something my great-great-grandfather sent to my great-great-grandmother," says Blueprint editor Rebecca Thuss. "But I found it in a stack of letters at an antiques store when I was in college. I love the stamp, the smeared ink, and the postmark: 9 p.m., March 21, 1907." Also good: love notes, old report cards (especially ones that have teacher comments -- either incredibly dead-on or woefully off-base), and teen-diary pages ("Mrs. Johnny Depp" written over and over in purple ink).
Why this? Any letter or paper with a beautiful stamp or ink -- even if it has coffee rings and smudges -- adds drama to a wall.