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McHenry County High School Seniors apply for the Nancy Fike Scholarship Search form Open Hours VISIT Museum HoursTuesday Friday9 AM 4 PMSaturdays 10 AM 4 PM Be A Member JOIN Annual Membershipand our Museum Store Support DONATE Annual Fund 2025 Ways to Support McHenry County Historical Society Educating and Preserving History since 1963. For over sixty years the McHenry County Historical Society has enhanced lives by preserving the countys history. In addition to operating the Museum the Society plaques historic sites and structures conducts adult educational programs and welcomesschooland adult group tours. The Societys funding sources include membership dues business sponsorships admission fees private donations and a trust fund.