​Convention Information

ANTIQUE DOORKNOB COLLECTORS OF AMERICA

2026 ADCA Convention
​
 Philadelphia, Pennsylvania

August 6-8, 2026
​

Patriotism - Knobs Commemorating

Americans and American Ideas

​The Antique Doorknob Collectors of America will hold our 46th Annual Convention

at the Embassy Suites by Hilton Philadelphia Airport Hotel.

This should be an exciting opportunity for collectors and historic preservation 

enthusiasts​ to gather again as we have since 1981 to buy, sell and trade hardware,

​and share ideas & thoughts.

​The  2026 ADCA Convention  will be 

Open to the public Friday, August 7, 2026

​Oklahoma established as an Indian territory for tribes forcibly moved from the south.  Pressure for land lead Congress to change the ownership of the land from the tribes to individuals and make "extra" available.  This led to the great land rush of 1889. Oklahoma became a state in 1907 and Oklahoma City the State Capital in 1910.

The adjacent slides from the Oklahoma Arts Council show the beauty of the Capital building.

Hotel Information

Embassy Suites by Hilton
​​Philadelphia Airport   
9000 Barton Ave.
Philadelphia, PA 19153
(215) 365-4500


​The Embassy Suites offers comfortable guest rooms and comforting amenities. Please contact the hotel if you need any special accommodations, and visit their website to see their features.

• Reservations can be made using this link: https://www.hilton.com/en/attend-my-event/okcmres-adc-d8dd5490-ae9e-40f8-b17d-8c11da4c1053/​

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​The convention rate is $152.00 plus 16.25% tax per night, and includes king suite, complimentary breakfast and evening reception, free Wi-Fi and free parking.

• Cutoff date for hotel reservations is July 17. Embassy Suites cancellation policy is 24 hours prior to scheduled arrival date without penalty.

​2026 Convention Schedule

Wednesday, August 5, 2026

• Arrive​ Convention Hotel
• Visit with fellow members in the Hospitality Room​

Thursday, August 6, 2026

• Tour: Hagley Museum and Libraty

Friday,  August 7, 2026 

• Buy, sell, and trade all day in the Convention Hall​
• Public welcome 4-6 pm
• Visit with fellow members in the Hospitality Room

Saturday Morning, August 8, 2026

• ​Buy, sell, trade all morning

Saturday Afternoon

• Auction

Saturday Evening​​​

• Banquet, awards presentation, and club business meeting
• Visit with fellow members in the Hospitality Room

To attend, you MUST be an ADCA member, so simply join the Club by signing up using
​
one of the methods using the link below.  Our Individual Memberships start at $30 per

year.    Our Business memberships are $100 per year and include listing on our

​Buying Antique Hardware page and in the newsletter.

(The only required fields for joining on-line are name, email, address and phone.)

JOIN THE ADCA

CONVENTION REGISTRATION AVAILABLE NOW

REGISTER ON-LINE FOR CONVENTION

DOWNLOAD CONVENTION REGISTRATION FORM (PDF)

Please note that Members attending their first ADCA convention are not charged the basic Registration fee (i.e. free other than the tour day events).

Contact the club by e-mail at [email protected] for additional information about the Club or attending the Convention. 

Convention packets will be mailed to active ADCA members in February and posted to this page using button at left.  If you joined the Club using the Paypal system for your membership, you can now register on-line and pay for the Convention using that system using the link at left.