A John Maloney page: Tiny, third-party page on one of Morphic's two main inventors who is still working on Morphic.
Getting Started with Morphic: One screenshot(!) and brief description of how to begin.
Janak on Morphic UI: A few useful tips for once you get going, and a bit of opinion/critique.
Prototype-Based Application Construction Using SELF 4.0: Uses Morphic in the context of its original implementation.
Sun Labs: Self papers: Where Morphic began, as a prototype-based implementation. Here are html Morphic User Interface papers, as part of the Self, prototype-based, object oriented programming language.
The Self-4.0 User Interface: Manifesting a System-wide Vision of Concreteness, Uniformity, and Flexibility
Tutorial: Fun with the Morphic Graphics System: Tutorial is by John Maloney, edited by Ted Kaehler and Dwight Hughes. Part I of a planned three part series.
Where is Squeak Headed?: Morphic's home now, as a class-based implementation, in a new, open source, graphics model for Smalltalk, based on the Morphic interface to Self. Much simpler and yet more general than the model used in many other object oriented languages: MVC.