Thanks to everybody who took the time to comment on Revolution.
In several comments and emails a number of people asked about the hardware I used to complete this project.
This is a product called the Revolving Artist Trading Card (ATC) Holder and is made by a company called 7 Gypsies.
Along with the holder, the company also sells prepunched cards and tabbed cards to be used with the Holder. They also just released a punch to allow you to attach already made ATCs. Also, they now have a larger Revolving Holder and "slipcovers" to allow you to display 4 x 6 photos and other small pieces of art without needing to punch holes in the work. Google "7 Gypsies" to find an online store to purchase these items but be prepared to wait because they are often sold out!