It's the end of the Draper marriage. As you'd expect, Bobby and Sally don't take the news well.
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In one of the funniest scenes from the season three finale, the new partners vote on creating Sterling, Cooper, Draper and Pryce.
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This is a shot of Don Draper from the third season finale of Mad Men. He's at a major crossroads in life.
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Mad Men Season 3 Episode 13 Quotes

I want to build something of my own. How do you not understand that?

Don

I got everything I have on my own. It's made me immune to those that cry and complain because they can't.

Hilton