Wild Bill, for the first time, sat with his back to the door. HBO led viewers to believe that Wild Bill was sick and half expected to get shot.

I don't recall the fifth card.

I believe that HBO researches it's historical topics very well.

However I do recall that HBO portrayed ivory poker chips as the currency in play. I thought it very accurate that the $1 chip had a flower (or leaf) on it instead of the number 1. As all ivory collectors know, the number one is rarely used on ivory chips.

Below is a typical set of ivory chips ($1, $5 and $25)