References & practical guides
Resources
Research material for identifying, documenting, dating and preserving historical flags.
Identification
Flag Identification Tools
FindMyFlag: reverse image search for unknown and historical flags, with source attribution and guidance on interpreting visual matches.
Manufacturers & construction
Manufacturer Labels
Bonner, Annin and Defiance labels, postal addresses and production markings as evidence.
Historical sources
Flag Books & Catalogues
Flaggenbuch editions, scanned manufacturer catalogues and historical flag manuals.
Archives & external references
External Research Sources
Archival records, flag databases, physical collections and specialist manufacturer discussions.
Reference
Flag Sizes
Historical flag dimensions and standard size tables.
Reference
Imperial German Naval Flag Sizes
The official 1892 regulations and their historical size tables.
Preservation
Flag Care
Storage, rolling, handling and climate guidance.