The Wickson Plum
This is the fourth member of Mr. Burbank's famous quartet of plums. Unlike the others, it was developed many years ago. Its ancestors were the Kelsey and the Burbank. The plum was first named the Perfection, but was subsequently rechristened the Wickson, in honor of the University of California. This plum has extraordinary shipping qualities, and has attained great popularity.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 5 Chapter 2