The NC State Archives has a Flickr photostream. While I could only locate a few pictures relevant to Martin County, this is a great resource to check if you’re researching other areas of NC. The images are great quality and cover a wide variety of topics. And, even if there is nothing there you find interesting today, you can always subscribe to the Flickr feed to stay aware of updates as they make them.
Some images I did find include this one below of the Hardison BBQ business near Jamesville.
Hardison BBQ Business. Digital image. NC State Archives Flickr Photostream. 27 Nov. 2008 <http://www.flickr.com/photos/north-carolina-state-archives/>.