Posted By:
martindlAdd "position" to your checklist and you'll have created something unique. For all the T206 checklist that i've seen, none has position. It would be a boon to those folk that like to only collect pitcher, shortstop, catcher cards, etc.
Lipset already took care of the series cross reference along with cross references to other sets, but adding it into your list and having it all in one place would be helpful.