| 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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| 1971 | Planned Parenthood of Wisconsin officially becomes a statewide affiliate, with 17 clinics opening throughout Wisconsin in the 1970s. |
| 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 | 27 health centers provide care to over 70,000 patients. Advocacy programs engage tens of thousands of supporters and the Education staff provide educational programming to over 14,000 patrons. |