| 1935 | Milwaukee's first birth control health center, the Maternal Health Center opens. (Now Planned Parenthood) |
| 1949 | The Milwaukee health center becomes an affiliate of Planned Parenthood Federation of America. |
| 1960 | The FDA approves sale of contraceptives. PPW starts one-year research study of oral contraceptives.
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| 1964 | Margaret Miller starts as executive director..a new era begins! First new neighborhood health center opens. The Margaret Miller Award is the highest volunteer recognition.
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| 1965 | The U.S. Supreme Court rules to allow married couples access to contraceptives.
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| 1970 | The U.S. Congress passes Family Planning and Populations Act, the turning point for increased federal funding. President Nixon supports the act.
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| 1973 | Roe v. Wade. Four new health centers (then called chapters) are established across Wisconsin. |
| 1974 | Dr. Roy Holly is appointed Medical Director. The Roy Holly Award now recognizes outstanding PPW health center staff. |
| 1975 | Wisconsin repeals Comstock Law, allowing sale of contraceptives to unmarried persons (the last state in the country to do so).
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| 1978 | Planned Parenthood receives Title X statewide family planning grant.
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| 1982 | Health centers open at Capitol Court and Mitchell Street in Milwaukee. Minority task forces from the Hispanic and African communities help make this possible. |
| 1983 | First self-sustaining health center opens in Milwaukee.
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| 1984 | Planned Parenthood of Wisconsin now has 30 health center sites statewide.
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| 1993 | "Gag Rule" is removed by President Clinton. "Freedom of Access" to health center entrances is passed by federal law. |
| 2001 and beyond | Jim Stewart is named as President and CEO. Thirty-one health centers provide care to over 66,000 patients and see 182,918 patient visits. Advocacy programs engage over 35,000 supporters and the Education staff provide educational programming to over 14,000 patrons. |