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Maria Montessori is born.
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Dr. Montessori visited and toured the United States and lectured on her theories.
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Montessori movement in the United States stops.
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Nancy Rambusch met Mario Montessori.
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Nancy opened a Montessori School In Greenwich, CT.
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Nancy opened the Whitby School, the first Montessori School in the US
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Mario Montessori appointed Nancy Rambusch to serve as the US representative of AMI.
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AMS founded by Nancy McCormick Rambusch.
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A TIME magazine article featured Nancy, the Whitby School, and American Montessori revival.
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First AMS Teacher Training Course.
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AMI withdraws its recognition of AMS because of philosophical differences.
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Cleo Monson hired as Executive Secretary to reorganize AMS.
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The AMS National Office moves to New York City from Greenwich.
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Public Montessori schools started in a few places.
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AMS associates with Comite Hispano Montessori for Spanish Montessori Education in the Americas and the Caribbean.
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Cleo Monson became first National Director of AMS.
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First AMS International Symposium in Athens.
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Nancy Rambusch passed away.
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MACTE founded as an organization to oversee all Montessori Training Programs.
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National Center for Montessori in the Public Sector founded by AMS to assist Public Montessori Schools.
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AMS and AMI/USA form Montessori Public Policy Initiative for Montessori Early Childhood Education in schools.