Art Needlepoint's blog just mentioned what they call a stitch guide, emailed free to anyone who has bought from them in the last year. It appears to be a collection of twenty-two diagrammed stitches along with hints on where to use them. It is NOT what we generally refer to as a stitch guide, which is usually what a road map plan for a specific canvas is called by modern needlepointers.
Please note that Art Needlepoint sells glicee printed canvases (and some hand painted ones--see Doreen's Comment below) that reproduce various paintings. Their work is not stitch painted so if you are not comfortable with canvases where you have to figure out what color goes where, you should avoid their designs.