One of my new favorites, courtesy of a fellow board-member. Thanks Blair!
1948 Groganphoto Postcard - Bill McGowan (HOF umpire) - autographed on back:
Here's the envelope it came in, confirming the date of issuance:
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http://imageevent.com/derekgranger
HOF "Earliest" Collection (Ideal - Indiv): 244/342 (71.4%)
1914 T330-2 Piedmont Art Stamps......: 114/119 (95.8%)
1923 V100 Willard's Chocolate............: 177/180 (98.3%)