Click the link to the article and then click on the postcard to see pictures of the rest of the postcards.
Very strange. I looked at the postcards. Some were tourist postcards, collected from different sites in Florida, and two of them appeared to be rather feminine looking note cards (the type of blank cards you can buy in a museum gift shop or high-end stationery store). One was a water color of a cat on a chair in a garden, and the other was a somewhat whimsical looking thing that appeared to be on hand-made or special paper with fibers in it. Odd choice of jihadi writing materials.