General Magic started life as an internal project at Apple called "Paradigm." This was pitched to Apple executives in late 1989/early 1990, and as part of that pitch, a book of concept art was created. I later found one of these books when General Magic's marketing department was throwing away some old boxes.
The entire contents of the book are posted on my web site, and I'm attaching choice selections here.
First up: a view of the hardware clearly shows a touchscreen device operable with pen and fingers, that's capable of messaging and taking photos. Note that this is a full 7 years before Philippe Kahn rigged up a camera/cell-phone combo in 1997.