DirectX SDK (August 2007)
https://www.microsoft.com/en-us/download/details.aspx?id=13287 (removed from Microsoft Download Center)
File : dxsdk_aug2007.exe
CRC32: 4EAF2D00
MD5  : E866E58A5CBFC98B3880261B5AE78529
SHA-1: C812C18E2972BDB1D9CBB544BE9CED9370A4656F

DirectX SDK (February 2010)
https://www.microsoft.com/en-us/download/details.aspx?id=10084 (removed from Microsoft Download Center)
File : DXSDK_Feb10.exe
CRC32: 755D4FF4
MD5  : 15E4C96DCC44AA60380A2DBBAA103A63
SHA-1: C1C66499B2E5C5530B07285AF4C090C33AF4A4F8

DirectX SDK (June 2010)
https://www.microsoft.com/en-us/download/details.aspx?id=6812 (still available, at least for now)
File : DXSDK_Jun10.exe (new)
CRC32: CD70ECE6
MD5  : 2AF0C3791863CA873EF6D7D6A761D608
SHA-1: 495AD05AE5FC4ECD76B53A69A35BACB66D958608
File : DXSDK_Jun10.exe (old)
CRC32: 6A29D7A6
MD5  : A7FA610B1791D873162B9E33007A6777
SHA-1: 8FE98C00FDE0F524760BB9021F438BD7D9304A69