Passport to History Month is returning this month, featuring four weekends of old-fashioned summer fun.

More than 35 historic sites in the Lehigh Valley and surrounding counties invite the community to step back in time with free admission, tours, activities and programs for visitors of all ages.

Weekend 2: July 13 and 14

• Jacobsburg Historical Society, Nazareth – July 13

• Whitehall Historical Preservation Society: Helfrich Springs Grist Mill - July 13

Other major weekend event (paid admission):

• Blueberry Festival (Bethlehem) - July 12 (Market to Go), July 13 and 14

Weekend 3: July 19, 20 and 21

• 1803 House, Emmaus - July 20 and 21

• Emmaus Historical Society - tables hosted at Emmaus sites

• Governor Wolf Historical Society, Bath - July 20

• Knauss Homestead, Emmaus - July 20 and 21

• Lower Macungie Township Historical Society - July 20 and 21

• Moravian Historical Society, Nazareth – July 20 and 21

• National Museum of Industrial History, Bethlehem - July 21

• Shelter House, Emmaus - July 20 and 21

• Whitehall Historical Preservation Society Helfrich Springs Grist Mill & Civil War Encampment - July 20

Weekend 4: July 27 and 28

• Atlas Cement Company Memorial Museum, Northampton - July 27 and 28

• Lehigh Valley Heritage Museum and Trout Hall - July 27

• Northampton Area Historical Society - July 27 and 28

• Whitehall Historical Preservation Society Helfrich Springs Grist Mill - July 27

Lehigh Valley Passport to History is a partnership of 65 plus historic sites and resources in and around the Lehigh Valley region, including sites in Northampton, Lehigh, Berks, Bucks, Carbon, Chester, Monroe, Montgomery and Warren counties.

The group helps to promote local tourism and shares historical activities, events, tours and exhibitions throughout the Valley and beyond.

Passport to History is supported in part with funding received through the County of Northampton Hotel Tax Program, the County of Bucks Tourism Program and the County of Lehigh Tourism Development Program.

Explore more information at lvhistory.org.