Transfer of Employer - Need Approval Notice Copy

[milesremarkable]

Hi, back in 2008 I my application visa I-140 was approved and as stated from the USCIS website, a Notice of Approval will be sent to my then employer/petitioner. However, that employer/agency no longer exist. I now have a new employer who's willing to continue my application, but they are asking for a copy of my approval notice. I tried to contact the law firm who handled my previous employer but told me the do not have a record of it.

Is there a way for me to request a copy from the USCIS to be sent directly to my new employer? what should I do?

Thank you in advance for the help