I worked for National Westminster Bank U.S.A. from 1984 to 1990 and I believe I am entitled to a vested pension from them but I believe that they were taken over by another bank after I left. I would like to know how to find information on my vested pension.

If you have a vested pension balance you should be rceiving at least annual reports from your former employer. Have you been receiving any such reports in the past 18 years? Ou might try doing a search through the Pension Benefit Guarranty Corp - see:
https://search.pbgc.gov/mp/mp.aspx

Also see the document "Finding a Lost Pension" here:
PBGC Publications (PBGC.gov)

Bronx uniforms Inc.

Yes, but they no longer exsit

Is anyone there?