Here's a page full of such stuff. 
I didn't realize you'd specified t206's; sorry. 
 
I do like such cards and find interesting--they give you, your imagination, a tangible connection with the past--but I don't over-value/collect them, per se [I'd trade any of these reasonably; pm me if interested].  I've accumulated most of these simply because they were affordable. 
 
I have several more starred 206's, and quite a few more that have been written on, some neatly, some scribbled, but I like these best.  My favorites are the "32" and the pair of B.B. Gannons [I take it that's a G]. 
 
Doug
		 
		
		
		
		
		
		
		
		
	
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