How do I find the historical arrival procedure GOLDN6 for SJC that is no longer valid?
I'd google it &amp; look thru the results until you find one that has the arrival depicted.
Understand that the numeric part of the arrival (6 in GOLDN6, for example) changes over time. Maybe the FAA adds, or removes, or changes a speed restriction at a given waypoint on the arrival. The number will go up, and the new version will be effective on a given date. Then in some number of months, something else changes, and the number increments again. When it gets to 9, the next revision goes back to 1.  (Which is okay, since the last GOLDN1 was now years in the past, and what's important is differentiating the current procedure from one that was recently superseded.)
Typically, these revisions are pretty minor, and when airspace gets revised on a large scale, the old procedure names are all retired, and all new procedures are published with all new names.
All of that to say, if you search for &quot;GOLDN arrival SJC&quot; (and don't let the search engine helpfully substitute 'golden' in the query), you may find a chart of the GOLDN4 or GOLDN5, which would most likely be quite similar to the one you're interested in.
I imagine that the FAA TERPS office keeps archival copies of everything that they've ever published, as (probably) would OAK Center and the NORCAL TRACON, and (almost certainly) Jeppesen, but those avenues start becoming a lengthy research project, trying to get in touch with the right person in the right office.
So I'd peruse search results first.