Prompted by a teacher facing the start of his class, I'm pleased to re-announce (as I did back in 2006) that the digital version of the PNM map is still available for free download.
You can download the map as a PDF in high-resolution format (17 or so MB) or low-resolution format (around 300 KB).
The downloadable maps will remain accessible via the top mast navigation (above) under the header "download."