Microsoft makes source code for MS-DOS 1.1 and 2.0 and Word for Windows 1.1a available to public

Microsoft made available to the public MS-DOS 1.1 and 2.0 and Word for Windows 1.1a with the collaboration of the Museum of Computer History.
The reasons Microsoft explains «to help future generations of technologists better understand the roots of personal computing.»
MS-DOS was crucial for Microsoft because after Tim Paterson acquired it for $75,000 he licensed it to IBM for his personal computers under the name PC-DOS.
Word for windows appeared in the moment that windows 3.0 was installed in factory of PCs.
Below is the location of the code:
  Source Code MS-DOS 1.1 – 2.0
  Source Code Word for Windows 1.1a

March 25, 2014 Microsoft makes source code for MS-DOS and Word for Windows available to public