Right-click the file and select or "Extract to [Folder Name]" using your chosen software.
To view the "interesting" contents within this specific file, you will need to use a tool capable of decompressing .7z archives: HC_20131104_Brittany_S1166y.7z
Newspaper clippings or photographs related to the "Brittany" or "Britt" surnames. Right-click the file and select or "Extract to