I have collected Black Sox stuff for years now and have a respectable collection including just able every Attell card issued. Here are some old pictures that aren't updated but show a good amount of what I have.
Cracker Jacks
Attells
Schalk
Rare Jacksons, Schalk RC and a tough Ciccotte
W514
1920 Holsums
Jackson Game Card 1
Jackson Game Card 2
And my big one
I believe the only Attel cards I need are as follows
T219 Red Cross (I don't think I have ever seen one)
T229 Kopec (Only seen 1 that was missing about 25% of the card)
T9 Ad Back, I should have bought the only one I saw years ago but didn't
1938 NX5 never seen one for sale but one is on the SGC registry. I didn't know about this card until last year when it was added.
If anyone has any of the above, I am a buyer even in this weak boxing market.....