Source Origin at Basel
The surviving 1566 broadsheet record identifies Basel as the publication site and dates the account to 27/28 July and 7 August, preserved as a single-sheet print rather than a later compiled witness log.1
Reported Observers and Transmission
The catalog text references Basel as the reporting context but preserves no named eyewitness list, so the material transmits a localized claim sequence instead of individual testimony.12
Interpretation Evolution
Early institutional descriptions frame the sheet as a portent-like warning within a troubled civic setting, while later institutional commentary reframes the same record through historical and atmospheric analysis and catalog context.3456
Archival Trail and Site Reliability
The broadsheet’s documentation chain is visible through catalog metadata, IIIF object links, DOI registration, and named-attribution search records, which together map how the Basel site report moved into long-term archival circulation.12378