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.

Tiny, third-party page on one of Morphic's two main inventors who is still working on Morphic.

Manifesting a System-wide Vision of Concreteness, Uniformity, and Flexibility

Uses Morphic in the context of its original implementation.

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.

One screenshot(!) and brief description of how to begin.

A few useful tips for once you get going, and a bit of opinion/critique.