http://www.net54baseball.com/showthr...exhibits+cards
http://keymancollectibles.com/exhibitdatechart.htm
This link from a Net54 thread in 2009 is a solid discussion of dating these cards, and the KeyMan site has a well known "Exhibit Supply Dating Chart" (although I have been told by several Exhibits experts that a few of the dates/photos are reversed in the late 40's).
On the cards listed, I really can only comment on the Williams #9 showing, and most feel this dates to the 1942-1945 period.
Dave