Posted By:
warshawlawAh, the world waits breathlessly for my article on the subject for a future issue of Old Cardboard. 
Edited to Add:
I also don't get how a rookie collector can place such importance on the "rookie" of a player with significant minor league issues. I understand it, I just don't get it. From my perspective, I would much rather have the player's first card than his seventh card, even if the seventh card is his 1st as a major leaguer. Look at Earl Averill: 2 Zeenuts and an Exhibit PCL before his MLB "rookie" card? Or Joe DiMaggio, Mickey Cochrane, Dazzy Vance, Lloyd and Paul Waner, Lefty O'Doul, etc. All those guys with significant minor league cards predating their "rookie" cards, some by years.