Hey katelyn1, I think the character you mean is Trudy, not Tracy? I'm afraid you probably won't be able to find an exact copy of her jacket because MM's costume designer uses a mix of vintage items and others custom-made to look like vintage. Maybe check out eBay's vintage clothing listings? I've found some good stuff there. If you're persistent and flexible on the details something similar may show up. Good luck from a fellow vintage clothing collector.

Tracy is Trudy's identical twin sister that Pete does not know exists. Their nefarious plan is to have Pete impregnate fertile Tracy and switch back places after she gives birth. Unfortunately, their plans went awry when the hospital mixed up the Campbell's baby with Dennis Hobart's baby (the guard from Sing-Sing). In a panick, Trudy asks Anita Respola to raise the unwanted child, not knowing that Anita is already raising Pete and Peggy's love child. Talk about a cluster f*ck.

Let me know if you'd like me to clarify anything else, such as Lois Sadler's promotion to CEO of Sterling Cooper or Anna Draper's true identity as a KGB/North Korean spy.