Good trekking maps himachal pradesh?

Is there any good free maps for himachal pradesh or more specifically the kullu/parvati valleys, or also dharamsala areas?

http://hplahaulspiti.gov.in/TrekMaps..._Phirtsela.jpg

http://hplahaulspiti.gov.in/TrekMaps/Klg_Pdm_Monla.jpg

http://hpkullu.gov.in/Gallery-Maps-1.html

There are certainly good maps, but for strategic reasons they are not available to the public. The U502 series http://www.lib.utexas.edu/maps/ams/india/ is good for some areas, where the cartographers have measured or hiked themselves, for other areas they can contain free fantasy. They are nowadays semi-antique. Modern Survey of India maps tend to have rivers and streams correctly denoted, but are weak on ridgelines and watersheds.

The best is to combine various maps and also use google earth which can give a really good image of the lay of the land.