These abstracts have been printed from a database compiled by the Archives & Rare Books Department of the Libraries of the University of Cincinnati. They cover original and restored Declarations of Intention to Naturalize and the subsequent naturalization papers for over 25,000 people, whose papers are on file at the Hamilton County, Ohio, courthouse for the years 1837 to 1916. Many of the records originated in other counties and other states. The abstracts include the name and age of the applicant, country of origin, departure port and date, arrival port and date, declaration date, and naturalization date, provided that data was available in the files. Copies of the original records can be obtained from the Archives for a small fee. This work presents a substantial source for identifying immigrants who settled in Ohio (at least long enough to get naturalized).