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Glen VThe Old Cardboard Site (link at the top of the vintage board, or http://www.oldcardboard.com/ ) has lists of all the bread cards, as well as others. Click the D-Cards link, then the Clements Bros Bread link and it shows both years/types of Clement Bread (1909 D380-1 Oval, 1910 D380 Square). The site say there are 8 oval cards, but I think there are 6 know, plus 8 square ones.
The Standard Catalog of Baseball Cards would have lists of the bread cards, plus most others. Fairly cheap from amazon: http://www.amazon.com/gp/product/0873499913/qid=1125475321/sr=1-3/ref=sr_1_3/002-8234445-3103213?s=books&v=glance&n=283155