Immigration Case I-130 receipt number lost

Question

I filed an I-130 application with the US Immigration Services for my sister and brother about 10 years ago, but my sister lost her receipt number and notice of action paper where the receipt number appears, is there a way to get that receipt number in order to see her case status, my brother already got approved.

Answer 1

Hello where can I get the case # or the reciept number, if I lost the paper. Thank you