Contour maps for lot listings...

[Mike Sanford]

I list a lot of land in Santa Fe, NM, some of it mountainous, and I would like to add something like a topographic map/contour map with parcel lines to the listings.  I can go in to our county and buy one for each individual lot from the GIS office but would prefer to find an online subscription service to save time.

So far I haven't found what I'm looking for googling around.  Any suggestions?