Here is a pen/brush/ink drawing referenced from one of those Time-Life Old West books. I piled on the color and texture in photoshop just for kicks-- or maybe to hide the drawing.
...No cowardice allowed! So, here's the uncluttered drawing as it currently resides in my sketchbook. I might stain it with real-world colors later if I run across one of those idle moments I've heard so much about...