I believe what you tell me I need to believe.
You are the Doc.
LOL (seriously)
That said,
With minimal court records available and the many years since, and being a non-drinker for over 20 years....
Given the facts I posted, what do you suggest I need to have on hand at physical ???
Having been a Medic with DEA narcotics approval to carry and administer, As well as a DOT regulated CDL driver, this part kinda caught me off guard.
Scrambling to get all the historical documentation.
There will be, somewhere in the county file, usually in microfiche, an "officer's affidavit" or some such, and it should have the information in it, BAC if there was one. Go there, FIRST. If there was a BAC and below 0.15, it will save you a ton of heartache. Those won't be in the clerk's office, but will be in an offsite archive.
Or you can go directly to the Cert. Alcohol and Drug Counselor for his/her evaluation. Just make sure they list life long histories of five elements:
Tolerance
Withdrawal
Loss of control
Lifestyle centered on the use of...
Continued use in the face of known consequences....
and do it according to DSM 4 not DSM-5 (So-called NTSB format);
****
Obtain the certified DMV search from all state of licensure since that time and prove all are negative save the one offense.
Personal statement about the events at the time, your drinking habits as a young buck, the events that you recall from the night of the arrest, and your modification to current drinking habits, be QUANTITATIVE.
A good current letter from the longest person to know you professional in your workplace, hopefully a BOSS on letterhead, that you are trustworthy, can be left alone, don't cancel a the last moment (all of those are drug and alcohol behaviors) etc.
Evidence of an educational course. I am repeating my earlier post (9:18PM) as to what you need to bring with. Why? Because that is what is required. Ask again, it will not change. Ask a third time and it will not change. You DO want to succeed, yes? You haven't even begun and repetitive asking of the same question suggests you want to skive off the REQUIREMENTS already, before you have even started. If that is not so, I apologize, but the repetition is wearisome. Why would you go to a gunfight with a knife? Go without and it will just be a deferred exam (no certificate), and a demand letter 60 day later for everything on this list. It will be March 2017 before you get anywhere.
As to your assertion that you have been dry for 20 years: FAA's attitude is PROVE IT! So, despite the fact that it's likely true, reasserting it doesn't carry any water. Bring adequate evidence to your assertion. Instead, collect what they demand and take with you, "adequate evidence" that this is so.
*****
I do a ton of this stuff. Disbelief once is acceptable. But going to a gun fight with a knife is...so lame. Honest to g_d it's amazing that we survive to adulthood.