Found these while doing some research over the last few days. First is a checklist for the W600 set as it existed on 2-20-1909 in Sporting Life magazine. Buy a dozen for a dollar!
The second one is a Piedmont cigarettes ad from 1908 as it appeared in a Birmingham newspaper. I'm going to request a copy of the microfilm from 1910 & 1911 to see if I can find a T206 version of the ad sometime soon. There wasn't one in the 1909 papers I reviewed.