Many supporting documents,especially copy of W-2, IRS returns, bank letter, employment letter, approved I-140, etc. are common for I-485 applications for a family.
In concurrent filing of I-485 for self, wife and child; obviously, copy of passport pages, I-94, etc. would be attached to each application.
Do I submit one copy of the COMMON documents (with my application) or each application should have its own set of COMMON documents? (In my case three sets)
Should all copies be certified by notary (or equivalent)?
About 150 pages require certification. Where can I get this done?