Joan places the bouquet of roses on her desk pointing towards Don's office and then enters it. When she exists the office, the roses are pointing away from Don's office.
In the opening scene when Betty is endorsing Don's paycheck, we can see the pay stub showing deductions for "VA State Income Tax and VA SUI/SDI Tax." The Drapers live in Ossining, New York and Sterling Cooper is a New York corporation, so there should be no reason for these payments to the state of Virginia.