Guided investigation · about 6 minutes
A six-minute route through one catalogue record and three distinct archive publication families, ending with a disciplined comparison.
Checkpoint 1
Start with the stable record ID and preserved catalogue fields. Treat classifications, names, and explanation codes as recorded data whose meaning still requires source-level checking.
Checkpoint 2
Check how the location was positioned and what precision the public map actually claims before using geographic proximity as evidence.
Checkpoint 3
Record the issue, page-routing label, and confidence before reading. The archive link helps locate relevant material; it does not validate every statement in the publication.
Checkpoint 4
A second publication family broadens the trail. Note its issue identity and link precision, then inspect the scan rather than assuming its relationship to APRO.
Checkpoint 5
The third publication family increases archive coverage. It does not automatically create a third independent account; chronology and citation dependence still need review.
Checkpoint 6
Place Valensole beside Sillerup and Delphos. Compare source-family breadth, link counts, dates, and missing fields without converting coverage into a credibility ranking.
Interpretation boundary
Source-family counts describe archive coverage. Link-precision labels describe routing confidence. Neither substitutes for reading the scan, identifying dependence between publications, or evaluating a claim.