RE: (OT) Looking for aerodrome charts with numbered parking spots/gates..
They are hard to find. What I do is surf over to the actual airport site and download a concourse map. Most large airport sites have one.
Heres the link for KDEN
For taxi and facility charts, any number of online sites offer free ones.
AmericanFlyers.net (every chart you can think of, almost):
The best ones I have found are AOPA:
FSCharts (you must sign up, but it's free):
National Aeronautic Charting Office:
Hope this helps