elcome to the online home of The Historical Society of Dauphin County and the John Harris-Simon Cameron Mansion. The Historical Society of Dauphin County (HSDC) was founded in 1869 and has been headquartered at the Harris-Cameron Mansion, a National Historic Landmark, since 1941.

The mission of the HSDC is to collect, preserve, exhibit, publish, and promote interest in the history of Dauphin County for the education, enjoyment, and benefit of the public.

We welcome your interest in our collections, efforts, programs, and services.

Up and Coming at HSDC

Now thru January 15: Star Spangled Banner Exhibit

December 6: 175th Anniversary of the Whig National Convention

December 9: Deck the Halls: A Dickens Celebration

December 13: Holiday Tour of the Harris-Cameron Mansion
and the PA National Fire Museum

December 14: Christmas at the Mansion

See More of What's Up and Coming at HSDC

Holiday Gifts for History Lovers

Our museum store has a number of books and gifts suitable for history lovers. Items may also be purchased by stopping in our office building behind the Mansion on Monday through Thursday, 9:00am to 4:00pm, or at "Christmas at the Mansion" on December 14.

Deck the Halls: A Dickens Celebration

On Tuesday, December 9th, the National Landmark John Harris-Simon Cameron Mansion will again be the setting for the region's premier holiday celebration and recognition event, the Historical Society of Dauphin County's 20th annual Deck the Halls, "A Dickens Celebration." Read More...

Star Spangled Banner Exhibit

In celebration of the 200th anniversary of the Star Spangled Banner, an exhibit on display now through January 15 explores Harrisburg in 1814 and the connection of local veterans George J. Heisely and Ferdinand Durang to the national anthem and its first performance. Read More...

2014 Annual Report

To see the highlights of the Historical Society's 2013-14 fiscal year, please view our Annual Report.

The Oracle

Check out the latest issue of the Historical Society's newsletter, The Oracle. If you want to catch up on any HSDC news you might have missed, back-issues are also available.

Mansion Renovation Update - Porch Dedication

Thank you to Dauphin County for giving $100,000 towards the renovation of the front porch of the Harris-Cameron Mansion. County Commissioners George Hartwick, III and Mike Pries attended our dedication ceremony and press conference on November 20 along with HSDC board members, staff, and project participants.

Building Harrisburg: The Architects and Builders, 1719-1941

Building Harrisburg Cover

Ken Frew's epic account (400 pages, 350-plus illustrations) of the history of Harrisburg’s architects, builders and buildings is now available for purchase.

Buy "Building Harrisburg" Online

Online Gift Shop

Visit the Gift Shop

Support HSDC while getting something in return. Our online shop includes the Society's journal, Susquehanna Heritage, as well as Publications from the Past, which include transcripts of addresses given before the Society that cover topics such as transportation, industry, military and church histories.


  • Alexander Research Library
  • Monday through Thursday and the Second Sunday of the month
  • 1:00pm to 4:00pm
  • Research Information
  • Mansion Tours
  • Monday through Thursday at 1:00pm, 2:00pm and 3:00pm
  • The Second Sunday of each month at 1:00pm
  • Tour Information
  • Society Office
  • Monday through Thursday
  • 10:00am to 4:00pm
  • * For research and tour hours
  • please see above information *