Today, I sketched a scene from Google's Street View for the Virtual Paintout in Lithuania. This is "Lukiškės aikštė", the largest square in Vilnius:
Koh-i-Noor Hardmuth Polycolors on 9"x12" Dawler-Rowney Lyndhurst paper
I've enjoyed using these pencils so much that I recently decided to purchase the ones I was missing. My chart below shows all 72 colors (except no. 37 which was not available). Numbers 1 through 36 came with my original box of 36. I'm not sure it's really worth having the entire set because a few of the colors seem very similar but I'm glad I got the silver and gold (39 and 40) as I use them everywhere. There's also an "0" that you can use for blending.
The pdf chart you can download from the Koh-i-Noor site (Downloads, Polycolor) may be more practical as it's organised by color rather than number (with lightfastness levels, etc) but you can't see the colors very well so it's probably worth making your own chart.