Option 1: Link to the issu versions of each newsletter, like this:
[pictureframe image=”http://beta.designingeden.com/wp-content/uploads/2013/02/Screen-Shot-2013-02-03-at-3.56.49-PM.png” align=”center” lightbox=”false” title=”Fall 2005″ link=”http://issuu.com/designingeden/docs/designingeden_fall_05?mode=window” width=”102″ height=”150″]
Fall 2005 Newsletter

Option 2: Make it link to a page on the site, like this:

[pictureframe image=”http://beta.designingeden.com/wp-content/uploads/2013/02/Screen-Shot-2013-02-03-at-3.56.49-PM.png” align=”center” lightbox=”false” title=”Fall 2005″ link=”http://issuu.com/designingeden/docs/designingeden_fall_05?mode=window” width=”102″ height=”150″]
Fall 2005 Newsletter