Posted By:
Dan BrettaThis IS listed in the Standard Catalog. It's a 1913 Philadelphia Evening Times Supplement. Another one sold on ebay last night that I had my eye on.
http://cgi.ebay.com/1913-Philadelphia-EveningNews-Cabinet-Card-Ed-Collins_W0QQitemZ290028223452QQihZ019QQcategoryZ21 3QQrdZ1QQcmdZViewItem
And they do appear to be on cardboard.