[MSDN Library June 1998] Objects with Multiple Interfaces and QueryInterface (100%)

MSDN Library Visual Studio 6.0 > Specifications > Technologies and Languages > Component Object Model (COM) Specification 0.9 > Chapter 1: Component Object Model Introduction > Objects and Interfaces

[MSDN Library June 1998] Objects and Interfaces (57.4203295508891%)

MSDN Library Visual Studio 6.0 > Specifications > Technologies and Languages > Component Object Model (COM) Specification 0.9 > Chapter 2: Component Object Model Programming Interface > Component Object Model Technical Overview

[MSDN Library June 1998] Objects and the MAPI Architecture (37.1376811594203%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Guide > Objects and Interfaces

[MSDN Library June 1998] Objects Implemented by MAPI (37.1376811594203%)

MSDN Library Visual Studio 6.0 > Platform SDK > Database and Messaging Services > Messaging API (MAPI) > Guide > Objects and Interfaces

[MSDN Library June 1998] Objects that Extend the User Interface (33.7663485330505%)

MSDN Library Visual Studio 6.0 > Visual Basic Documentation > Using Visual Basic > Component Tools Guide (Pro, Enterprise only) > Extending the Visual Basic Environment with Add-Ins > Extensibility Model Objects and Structure