1. Search for copies of old immigration documents such as Certificates of Identity, Certificates of Residence, or
steamship tickets, and naturalization documents. Send copies of these documents – NOT the originals – with your
inquiry. When copying documents, copy both the front and reverse sides. Immigration officials noted dates and
case file numbers and made endorsements on the reverse sides of documents. Any hand-written numbers on old
documents could help locate case files. See the next page for examples of these documents.