Hi Bruce. If you have not already seen it, the Winthrop postcards are discussed in Issue #61 (May 2009) of the
Old Cardboard eNewsletter at
http://www.oldcardboard.com/enews/20...61/enews61.htm. They are also profiled (with an animation of the Mordecai Brown card) on the
Old Cardboard website at
http://www.oldcardboard.com/pc/1906-...cardsetID=1447.
Lyman