2015 Edition. PLEASE CHECK CURRENT COMPUTER REQUIREMENTS FOR THIS ORIGINAL VERSION. It originally played on Windows and Macintosh computers but I understand that current updates for both operating systems are not compatible.
From back cover "These DVD-ROM discs are for use in a computer DVD drive only; they will no play one stand-alone DVD players'"
Like new. Downloaded to my computer once.
The discs contain all issues from 1964 to 2014. A total of 314 magazines of 25,200 pages and 1828 plan drawings