I like this one for Ruppert - a 1901 Cabinet photo. No idea what PSA would consider to be his rookie, but it would likely be a HOF Plaque card or something of that nature.
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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%)