There is a gold cultivar, Anne, in commercial production and is relatively widely available. Otherwise, gold colored examples of this species tend to be just of spontaneous garden origin and infrequent.

I believe Anne is ad ideas cultivar. I am looking for the wild R. occidentalis variety.. I have verified by aarticle by W. H. Blanchard vol.7 no 80 August 1905 pp. 143-146. Enola Teeter

B

Rhodora

This site appears to have what you're looking for, and the company has a good number of positive reviews on Garden Watchdog as well:

https://oikostreecrops.com/products/organic-fruit-trees-shrubs-plants/wild-raspberry-plants/yellow-black-raspberry/

https://davesgarden.com/products/gwd/c/576/0/#b