The Best Prune-The Burbank Standard
This six-inch prune is named the Standard. It is a cross between the Sugar prune and the Tragedy, and it is considered by Mr. Burbank to be almost an ideal prune. Many experts concur in pronouncing it the best prune ever produced. Its trees are enormous and never failing bearers, and the fruit is of the largest size and of splendid quality.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 2 Chapter 8