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==Description of Collections==
'''Microform:''' There is a dedicated Genealogy Room with
three microform readers, two of which are ScanPro 2000. The Northwest Herald, formerly The McHenry Plaindealer, is available on microfilm back to 1875.
'''The print collection:''' There are approximately 2,200 items, including half of the McHenry County Genealogical Society collection (approximately 900 items); and approximately 140 items from BigWil (British Interest Group of Wisconsin & Illinois).