The Museum is open from May - October in Union, IL.

On July 4, 1976, the Society's Museum in Union, IL, officially opened to the public. The Museum is open May through October, from 1 to 4 p.m., Tuesday through Friday, and Saturdays from 11 a.m. to 4 p.m. The Museum is closed for major holidays. Please call or check our calendar if you are unsure. Admission charge for non-members. Adults - $5, Seniors (60+) and Students - $3, and Families - $12. The Museum is occasionally open during special programs in the evenings or weekends.

Our comprehensive collection includes several preserved buildings: The 1843 Gannon Log Cabin, an 1885 town hall, now known as Perkins Hall; a mid-20th-century modern tourist cabin, restored and housed inside the Museum. In 1982, the Museum added a local history research library. In 1988, we acquired the West Harmony School, an 1895 one-room schoolhouse, now used to recreate early 1900s-era school programs at our Museum location in Union. Finally, in 2009, we acquired the 1898 Riley Methodist Church.

The McHenry County Historical Society collects and preserves local history. Our Research Library has as its purpose the acquisition, cataloging, and preservation of documentary materials that relate to the history of McHenry County and its people. When consistent with the Society's mission, these materials may be made available to the public for research, study, and promotional purposes.

Unlike a public library, the McHenry County Historical Society's Research Library is accessible by appointment only after completing a research request. Because volunteers staff the library on limited days/hours, we cannot accommodate walk-ins, no matter the circumstances or distance traveled. Once your research request is submitted, we will begin the research, contact you about what we've found, and then schedule an appointment for you to come in if needed. Visit our Research Library page to pay your fee and complete a research request

**Research Request fees are waived for MCHS Members, but copying and image fees apply. There is a $30 research request fee for submissions made by non-members. If you are not a member and want to join, click here**