Here is a book about Immigration & Naturalization Records that you might find interesting
Mastering Immigration & Naturalization Records (Quillen’s Essentials of Genealogy) 3rd Edition
This volume, now in its third edition, in Cold Spring Press’s “Quillen’s Essentials of Genealogy” series gets to the heart of what genealogical research is for most Americans: hitting the shores of the Atlantic Ocean looking east to the UK, Ireland, and Europe as they begin their search for their ancestors. Largely a nation populated by European immigrants from the 17th through early 20th centuries, immigration and naturalization records is often just the source needed to locate important genealogical information. “Mastering Immigration & Naturalization Records” covers the following topics: — What are Immigration Records?; — What is the genealogical value of Immigration Records?; — Where do I find Immigration Records?; — How to locate Naturalization Records; — Genealogical value of naturalization records.
“Really helpful and well written book!! Its obvious the author cares about this subject and about creating successful results for those who follow his recommendations!! His personal comments really adds alot to the presentation!!” -Amazon reviewer