Microsoft Posts Source Code For MS-DOS and Word For Windows

"Microsoft, along with the Computer History Museum, has posted the source code for MS-DOS 1.1 and 2.0, and Word for Windows 1.1a. It's been a long time coming — DOS 2.0 was released for IBM PCs in 1983, and Word for Windows 1.1a came out in 1990. The museum, with Microsoft's consent, has made the code available for non-commercial use."

Story: http://tech.slashdot.org/story/14/03/25/186232/microsoft-posts-source-code-for-ms-dos-and-word-for-windows