HyperCard Users Guide, 1987
The website, vintageapple.com has some really amazing Apple and software-related printed ephemera.
A lovely, and legendary printed user manual for the HyperCard. HyperCard was created by Bill Atkinson, who also created and design QuickDraw, MacPaint, and principal designer and developer of the GUI for the original Apple Lisa. The development of the HyperCard later influenced the WorldWideWeb project.
For those interested, there's also a less thrilling but equally as important HyperCard Developers Guide.