Claim: The Adelphi School, located in Pennsylvania, was added to NHRP, the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance, in 1978.
Evidence: The Adelphi School was a Quaker-organized school for poor children that operated between 1808 and 1906 in what is now the Chinatown neighborhood of Philadelphia's Center City. It was listed on the National Register of Historic Places in 1978. The National Register of Historic Places (NRHP) is the United States federal government's official list of districts, sites, buildings, structures and objects deemed worthy of preservation for their historical significance.