2026-10-06 Deutsche Nationalbibliothek catalogue (DNB) - Hilgenberg-OC

URL tried: https://portal.dnb.de/opac/simpleSearch?query=Hilgenberg+Ott+Christoph Result: BLOCKED. The page loaded but the Chrome extension returned "Permission denied for reading page content on this domain" (a site permission setting in the extension, not a CAPTCHA). No content read. Fallback not tried (time). Next run: retry in Chrome after the owner grants the extension access to portal.dnb.de, or use web-fetch on the DNB SRU interface. Aim: holdings of the 1929, 1931, 1933 (x3), 1939 and 1959 self-published booklets, and the GND record 1217674209.