The symposium will be from 10:30 a.m. to 5 p.m. at the Oklahoma History Center, 800 Nazih Zuhdi Dr.
Tickets are $20. All materials and lunch will be provided.
After the symposium, attend the group's 20th anniversary party in Oklahoma City's historic Automobile Alley.
The celebration, titled “20/20: Two Decades of Preservation Oklahoma,” begins at 6 p.m. at the Caliber, 48 NW 8.
Entertainment will include live music, a video chronicling the organization's history and a presentation by author and Route 66 expert Michael Wallis. Founding board members will be recognized for their work.
The Preservation Oklahoma Young Leadership Award will be presented to Kristen Vails, executive director of the Plaza District Association.
The party is made possible by the Kirkpatrick Foundation, with additional support provided by BC Clark Jewelers, BancFirst, West, COOP Ale Works, the Spirit Shop, Pachinko Parlor and Sara Sara Cupcakes.
Admission to the party is not included with a symposium ticket. Party tickets are $20 in advance or $25 at the door.
Tickets to both events may be purchased online at www.preservationok.org or by phone at 525-5325. A one-year individual membership to Preservation Oklahoma — a $25 value — is included with the purchase of two tickets.