Manifestation-matching source linked in quality phase 235.
Quality phase 266 link review (2026-08-31): the University of Maryland DRUM bitstream returned HTTP 404; retained as historical resource metadata but marked offline.
Cover audit phase 719: reviewed in the complete frozen 821-candidate pass. Disposition=offline_or_removed. The database already records this resource as offline after source verification. External probe: HTTP 206; content type application/pdf;charset=UTF-8.
Cover audit phase 740: final outcome=source_offline_or_removed; source is offline or removed; retained as a historical pointer.
