Sadly, posting a photo or video from your smartphone onto Facebook or Twitter seems to have supplanted the good old postcard.
But there is a rich history to the American Picture Postcard and it centers on Detroit.
The "City That Put the World on Wheels" is also the city that turned out millions and millions of American postcards.
John Collier spent three decades as a photojournalist for the Detroit Free Press.
He is also a filmmaker who has turned his love of postcards into a documentary that’s called “My Postcard Collection: The Detroit Publishing Story: A History of the American Picture Postcard.”
John Collier joined us today in the studio.
For more information, go to http://www.mypostcardcollection.net/
Listen to the full interview above.