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National Harmony Memorial Park is a private, secular cemetery located at 7101 Sheriff Road in Landover, Maryland, in the United States. Although racially integrated, most of the individuals interred there are African American. In 1960, the 37,000 graves of Columbian Harmony Cemetery in Washington, D.C., were transferred to National Harmony Memorial Park's Columbian Harmony section. In 1966, about 2,000 graves from Payne's Cemetery in D.C. were transferred to National Harmony Memorial Park as well.