[MSDN Library June 1998] DirectX (100%)

MSDN Library Visual Studio 6.0 > Windows Resource Kits > Windows NT Workstation 4.0 Resource Kit > Chapter 5 - Windows NT 4.0 Workstation Architecture > Application Types on Various Hardware Platforms

[MSDN Library June 1998] DirectX 2 (35.623321887402%)

MSDN Library Visual Studio 6.0 > Platform SDK > Windows Base Services > Windows 95 Features > About Windows 95 > Windows 95, OEM Service Release 2 > Elements of Interest to Win32 Programmers

[MSDN Library June 1998] DirectX Goals (24.123102596194%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > DirectX 5 > Introducing DirectX 5

[MSDN Library June 1998] DirectX Media SDK (21.9104008215397%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services

[MSDN Library June 1998] DirectX File Format (21.2752867535161%)

MSDN Library Visual Studio 6.0 > Platform SDK > Graphics and Multimedia Services > DirectX Media SDK > Direct3D Retained Mode SDK > DirectX File Format