Microsoft has worked alongside the Computer History Museum on this particular project, and according to Roy Levin, distinguished engineer and managing director for Microsoft Research, “Thanks to the Computer History Museum, these important pieces of source code will be preserved and made available to the community for historical and technical scholarship.”
For those who show an interest to download the source code for MS DOS 1.1 and 2.0 and for Word for Windows 1.1a, you will first need to do the needful including agreeing to use it for non-commercial purposes, and not to post up the code anywhere on the Internet. Sounds like pretty easy rules to adhere to, although I am not quite sure whether folks will live up to their billing or not in due time. [Press Release]