McHenry Public Library District has free, online genealogy collections including:

• McHenry Plaindealer Death Index: 1949-1959

• McHenry Plaindealer Death Index: 1960-1969

• McHenry Plaindealer Death Index: 1970-1974

• McHenry Plaindealer Death Index: 1975-1980

• McHenry Plaindealer Death Index: 1981-1984

• McHenry High School Yearbooks 1916-1999, The Warrior

• 1998 McHenry High School Yearbook

• McHenry City Directories and Telephone Directories 1908-1959

• McHenry County Plat Maps, Atlases, 1892 plat map, 1908 plat map

They also have:

• The Pictorial Newsletter 1958-1967

• Glass Plate Negatives

• Items In Genealogy Room File CabinetItems In Genealogy Room File Cabinet

• McHenry Centennial Registration Book: July 31, 1936 – August 2, 1936McHenry Centennial Registration Book: July 31, 1936 – August 2, 1936

• Pictorial Newsletter ClippingsPictorial Newsletter Clippings

• User Contributions: 2020 McHenry COVID-19 Pandemic ExperiencesUser Contributions: 2020 McHenry COVID-19 Pandemic Experiences