These photos were taken a few days ago in a nearby public garden bed that supposedly contains cultivar "Joyce Lewis" - Herrington, 1989. The bloom and scape measured were 6" and 20", respectively (close to the 7" and 29" listed in the AHS db).
These look pretty close to the photo on the Dave's Garden site, but I'd like other opinions. Are the blooms in the photos probably "Joyce Lewis"?