A Philadelphia historian and collector has donated 39 Harriet Tubman artifacts to the planned National Museum of African American History and Culture, including the antislavery activist’s personal hymnal and one of the few surviving photographs of her, The Washington Post reports.

Charles L. Blockson turned over the objects to the Washington museum, slated to open in 2015, in a Capitol Hill ceremony on the anniversary of Ms. Tubman’s death. Born in Maryland around 1820, Harriet Tubman escaped from slavery and became one of the most famous figures on the Underground Railroad, returning repeatedly to slave territory to help hundreds of others to freedom.

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