Mary Martin is owner of Mary Martin Postcards, a three-generation family business and the largest postcard operation in the world. Ashley Rooney has written several books including Greetings from Cambridge, Massachusetts and Boston: Past and Present. She lives in Massachusetts.

David R. Craig serves as the Secretary of the Maryland Department of Planning, which oversees the Maryland Historic Trust and historic preservation. Mary L. Martin, Ltd. is a the largest postcard operation in the world, based Perryville, Maryland.

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