SqueakNews was an e-zine devoted to Squeak Smalltalk created and published in 2001 by Tansel Ersavas, with collaboration by many members of the Squeak community. It may be considered the pinnacle achievement of the Squeak community at its finest hour.
It is still the best example of Active Essays, and the closest to a Dynabook.
The easiest way to run them nowadays is to unzip and mount ISO files in a Windows system, and double click on the mounted drive.