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Get Your "Passport" Stamped this Summer

The National Mississippi River Museum & Aquarium and Mathias Ham Historic Site, both Partner Sites within the Silos & Smokestacks National Heritage Area (SSNHA), are proud to announce they have been selected as a National Park Service (NPS) Passport Cancellation Stamp location.

Beginning this month, both facilities will be placing a NPS Passport Cancellation Stamp at their location. A total of twenty-one SSNHA Partner Sites will have NPS Passport Cancellation Stamps available. Those sites include:

African American Museum of Iowa, Cedar Rapids
Amana Heritage Society Museums, Amana
Calkins Nature Area, Iowa Falls
Center Grove Orchard, Cambridge
Fossil & Prairie Park Preserve & Center, Rockford
George Maier Rural Heritage Center of Clayton County, Elkader
Hardin County Farm Museum, Eldora
Hartman Reserve Nature Center, Cedar Falls
Hurtsville Interpretive Center, Maquoketa
Ice House Museum, Cedar Falls
Iowa's Dairy Center, Calmar
Jasper County Historical Museum, Newton
Living History Farms, Urbandale
Mathias Ham House Historic Site, Dubuque
Mines of Spain Recreation Area, Dubuque
Motor Mill Historic Site, Elkader
National Farm Toy Museum, Dyersville
National Mississippi River Museum & Aquarium, Dubuque
The Sawmill Museum, Clinton
University of Iowa Museum of Natural History, Iowa City
Wapsipinicon Mill Museum, Independence

The NPS Cancellation Stamps will be located inside the entrance at the Museum & Aquarium's Mississippi River Center and in the entrance gift shop at the Mathias Ham Historic Site.

The NPS Passport Cancellation Stamp is a voluntary program that nearly all parks within the NPS participate. Visitors can purchase their official NPS Passport and start recording their visit to a NPS site by stamping their passport with a rubber cancellation stamp. The cancellations, similar to those received in an international passport, record the name of the site and the date it was visited.

Through a network of sites, programs and events, Silos & Smokestacks National Heritage Area tells the story of farm life and agribusiness—past and present. Visitors can learn about and experience agriculture at a variety of museums, historic sites, and farms. One of 49 federally designated heritage areas in the nation, Silos & Smokestacks is an Affiliated Area of the National Park Service. The heritage area covers 37 counties in the northeast quadrant of Iowa. To learn more about Silos & Smokestacks National Heritage Area, please visit