The Naturalization Records Research Guide is designed to help genealogists make sense of a process that often involved several different records, courts, and time periods. It explains census citizenship codes, the five main naturalization documents, the important changes in 1906 and 1922, pre-1906 and post-1906 research strategies, and derivative citizenship for women and children. It also includes a real research example, direct links to collections, plus a practical checklist to help you decide what to search next. Keep this Research Guide beside you while you work so you can quickly check document types, key dates, search locations, and next steps without having to stop and piece the process together each time.