The Johns Hopkins University collection of Black Americana materials spans from approximately 1870 to the 1950s. It is an artificially assembled collection of materials purchased and selected by the curators of Special Collections. The collection primarily consists of postcards, broadsides, and other printed ephemera that depict African American people in ways that are often racist and caricatured.

The Johns Hopkins University collection of slavery records is an artificially assembed collection by the curators of Special collections, with materials that span from the 18th to the 19th century and primarily document the enslavement of African Americans in the United States.

The Johns Hopkins University collection of white supremacist and anti-integartion materials is an artificial collection which spans from the 18th to the 21st century. The collection consists of broadsides, postcards, and other printed ephemera created by proponents of white supremacy, anti-integration, and racist ideologies.