Exact Google Play Books manifestation checked in quality phase 168: Ferdinand Delbrück, Bonn: Weber, 1836, 30 pages. The former caution about expanding the author name is superseded by Deutsche Biographie / GND 100102840.
Cover retrieved from the official Google Books cover endpoint for volume ua9AAAAAcAAJ in phase 635; validated at 300×497 pixels.
Quality phase 670: cover filename extension normalized from .jpg to .png after binary MIME inspection; image bytes and visual content are unchanged.
Digital Witnesses
Deutsche Biographie / GND — Ferdinand Delbrück
CatalogueHTML
Deutsche Biographie · open
Institutional authority record supporting the canonical name Johann Friedrich Ferdinand Delbrück and dates 1772–1848; contextual for authorship, not pagination.
