To Download the files:  Click on the photo icon or the word description below it.  An extra browser window will open containing the .PDF file and its multiple pages.  Locate the download icon          in that browser window and click on it.  The file will download to whichever folder the user predesignated for downloaded files (usually named as the "Downloads" Folder on the computer). 
                                                                                                     OR
If there is no download icon, go to the browser's 'File' pull-down menu and select 'Save As.'  Remember to notice in which folder the file is being saved.
 
Once the file is downloaded (usually within a few seconds), that extra browser window can be closed, taking the user back to this browser window (this page) with the Gallery and photo icons.