- Vintage postcards not otherwise specified - "Old Time American Cities and Sights" Dover Publications. The "library" is actually the US Post Office of Hattiesburg, MI.
- POW postcard - ffrom the collection of Jeffrey Shapiro, used with permission.
- Eiffel Tower postcard - from the collection of John Schrantz, used with permission.
- Quoddy Head lighthouse source photo - by K. Willie, used under CC BY-NC 2.0 license.