Clara Barton National Historic Site has three imprint cancellations for Eastern National's Passport to Your National Parks book; the imprint for Clara Barton National Historic Site, the Clara Barton Parkway, and the Clara Barton National Historic Site NPS Centennial. These are located at Glen Echo Park, adjacent to Clara Barton NHS. Walk through the parking lot, cross the wooden footbridge, follow the footpath into Glen Echo Park. The Ranger office is in the lower level of the red brick building with the public restrooms.
Collect the stamp for Glen Echo Park while there.