Supporting source for the collection history and chronology.
Evidence, credit & reuse: External source; consult the original publication for its full context.
Source: Original publisher or holding institution, linked at source
Cite this item
Silent Grounds Collective, Union School, SGC-WH-UNI-039, WH-UNI-010, “Supporting source: npgallery.nps.gov.” Source: Original publisher or holding institution, linked at source. https://npgallery.nps.gov/NRHP/GetAsset/NRHP/85003368_text. Research edition, accessed 2026-09-08.