Albert Etter and the California Nursery Company

Albert Etter Apples introduced in 1944 catalog

In 1944, six of Albert Etter's apples were introduced to the public. The California Nursery Company catalog cover shows Jonwin, All Gold, Wickson's Crab, Pink Pearl, and Alaska. Not shown was Humboldt Crab. A seventh apple, Crimson Gold, was introduced in 1947.

All were co-patented with Albert Etter and George Roeding, Jr.

Tom Hart presented the Legacy of Albert Etter in 2019.

The 2020 CiderCon session at Filoli was about historic orchards and with a talk by Tom Hart. 

Described in the catalog here are the six varieties.
Notice that Patents were applied for the varieties.
Wikipedia has been updated with links to the patents.

An interesting read on Etter and his apple varieties is this one from Ram Fishman. Some interesting points:

• Etter was originally a strawberry breeder in Northern California on his remote homestead, Ettersberg. He started breeding apples in the late 1920's.
• Etter crossed wide varieties for his new varieties unlike other hybridizers. Many varieties have the crab apple in their parentage.
• The pink-fleshed varieties were noted as appealing to children.

References

• Plant Patents - the first one was a rose 1931
• The Plant Patents for the Etter Apples are on the Albert Etter wikipedia page.
• Someone's account at Filoli event for CiderCon 2020.
• "Apple Breeding at Ettersberg"