Sump'n Like Wings, now on stage at Theatre Row, is the latest entry from the always intriguing Mint Theater Company, whose aim it is to uncover, dust off, and produce lost or forgotten plays from the past. This one certainly fills the bill. It was written just shy of a century ago by Lynn Riggs, best known, you might say, as the guy who wrote the play that inspired the musical Oklahoma!. And even that play, Green Gro…
