References made to the following counties, assumed to be the north central Illinois counties the society is primarily concerned with: Lee, Lake, Boone, Ogle, McHenry, Carroll, DeKalb, Jo Daviess, Kane & Stephenson.

"Articles were abstracted primarily from pages 3 and 4, which generally carried local news, vital record information, obituaries, and human interest stories. Legal notices . . . are not included but did appear regularly in each issue"--Foreword.

The naturalization papers granting U.S. citizenship were often called "Second papers". In 1906 the form was called Petition for naturalization, also, Petition and record.

Includes a family biography chapter of families that have had a continuous record of residence prior to and including 1918.

The Circuit Court also recorded naturalization papers.

"We of the McHenry County Illinois Genealogical Society are pleased to bring to you...a compilation of the names of ancestors being researched by many of our members..."--Forward [sic], 1st prelim. p.