John Ericsson National Memorial (U.S. National Park Service)

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Introduction

During his lifetime, John Ericsson revolutionized several facets of technology. The Swedish-born engineer-inventor is best known for his work during the Civil War when he transformed naval warfare through his design of the iron-plated USS Monitor. The movements of Ericsson’s pencil across his drafting board were as crucial to victory as the movements of Lincoln’s armies across battlefields.

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National Mall & Memorial Parks
900 Ohio Drive SW
Washington, DC 20024

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Visitor Information
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Climate

Washington has a temperate climate typical of the Mid-Atlantic U.S., with four distinct seasons. Summer tends to be very hot and humid Spring and fall are mild. Winter can bring cold temperatures, frozen precipitation and, on occasions, major snowstorms.