Buy Catalogs Newsletters Conventions Where to Buy

All Manufacturers

Francis Jahn

3 doorknobs in the archive

Philadelphia, PA

Home
Manufacturers
Francis Jahn

1860 --

Doorknobs by Francis Jahn

George Washington

George Washington

A-31300

Martha

Martha

A-31400

Representational

Representational

A-31410

A new home for the ADCA archive

Moving off a platform we had outgrown

Victorian ArtArchitectural Archive

Devoted to the study and preservation of ornamental builder’s hardware.

The Archive

Historical Context
Hallmark Index
Schools of Ornament
Identify a Doorknob
Recent Additions

The ADCA

Membership Tiers
Support ADCA
Scholarships
Facebook Group
Contact Us

Resources

Hardware Dealers
Places of Interest
Newsletter Files
Historic Buildings
The Arnie Award
Hardware Patents
Manufacturer Finishes

© 2026 Antique Doorknob Collectors of America

Website & member portal by DvijanMembership sites for clubs & non-profits