http://www.morningsidebooks.com/
price 7.95 + shipping.
I did take a look but this article is not on GDG, Gettysburg Discussion Group. However, they do have at least 1 complete article from every issue posted on their website, Morningside also has several complete articles posted but not of every issue. These articles do lack the maps and photos, unless they changed that recently.
I have the complete set of Mags and find them very enjoyable.
Chuck in Il.