In this photo taken on Tuesday, April 22, 2014, volunteer Gloria Chaney, of Nebraska City, clears leaves from around the Morton Mansion, the former home of J. Sterling Morton who founded Arbor Day. The mansion is on the grounds of the Arbor Lodge State Historical Park and Arboretum in Nebraska City. People across the nation will observe Arbor Day on Friday, but no state will celebrate with as much fervor as Nebraska, where the celebration of trees got its start 142 years ago. (AP Photo/Nati Harnik)
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