Cooper sits behind Don's desk, and orders him to sit down.  Don remains standing, and says a gruff, "What do you want?" "You, Don, have been standing on someone's shoulders.  We brought you in, we nutured you like family.  And now's the time to pay us back.  You can't go any further on your own, Don," Cooper replies evenly.  He pulls out the contract and lays it down.  "Would you say I know something about you, Don?" he says, echoing back to season one's big secret.  "I would," Don says.  "Then sign.  After all, when it all comes down to it, who's really signing this contract anyway?" Cooper says with a smile that doesn't quite reach his eyes.  Don stares at him with red eyes and a busted nose, looking like a puppy that got swatted with a newspaper.  But this is a puppy with sharp teeth.  "I don't want anymore contact with Roger Sterling," he growls as he signs, Donald F. Draper, 7-23-1963.

"Don?" Betty calls from her repose on the fainting couch.  He sticks his head in the living room, barks, "I signed it," and heads upstairs.  16 Tons plays us into the credits.