[USCIS] Recover A-number more efficiently

Updated Information: We cannot use the magic info pass word when calling USCIS as they require a receipt number after that and we don't have one yet. I-90 Application instructions advised if A number is not known to to add **NA** Here is an interesting one for you. My dad came to the US back in the 80s as a minor with his mom and step dad (military). They moved around a lot and he eventually graduated from a high school in Washington State. At that time he said they typically traveled using military dependent cards. He physically lost his green card and Social Security card decades ago after his step dad passed away. I know he left once to go back to the UK as a late teen and then came back to the states perfectly fine. Here is the messy part. He has had the same job for **35+ years**. Now the company got sold and he is looking for a new job just until he retires. As you can imagine, documentation is now becoming a problem. The **only things he currently has are:** • UK birth certificate • Washington driver’s license • He knows what his SSN is He went to the Social Security office but they said they want to see his green card to verify his identity before issuing a replacement Social Security card. They did say that his SSN does not appear to have any work restrictions. We tried applying online for a replacement green card, but he **doesn't know his Alien Number (A-number)** so we couldn’t complete the online process. We attempted a records request but it errored out, not sure if it was because of the weekend or something else. As a backup, I had him send in the **paper I-90 application along with the payment authorization form**, and it should reach Arizona on Saturday. He got passport photos done yesterday and is working on applying for his **UK passport** now so that we may be able to pursue an **ADIT stamp** if we can get USCIS involved. We also tried calling USCIS for guidance, but the phone system just routes us through an AI assistant that has absolutely no idea what to do with this situation. Every option eventually loops back to the same automated responses and it refuses to transfer us to an actual person. So at the moment we’re stuck between forms, mailing things blindly to Arizona, and arguing with a robot that keeps telling us to “check the website.” If it helps, he arrived in the early 1980s as a minor with a military family and has had the same Social Security number and employer for over 35 years. We’re wondering if there is any way to recover his A-number through Social Security records, Selective Service, or some type of USCIS file request. He is just extremely frustrated because he wants to keep working and didn’t realize how many documents he would need to replace after all these years. I’ve been trying to help as best as I can, but his situation feels pretty unusual. **Has anyone dealt with something like this before?** Is there any faster way to recover someone’s A-number or confirm permanent resident status when they lost their green card decades ago? **TL;DR** Man immigrates to U.S. in the 80s. Loses green card sometime before the internet existed. Works the same job for 35 years so nobody notices. Company gets sold. Now we must summon paperwork from 1980s USCIS archives before he leaves to go on a pub crawl in Liverpool.