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Vanderbilt Mansion National Historic Site, New York
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Pearson Street Books Vol 4 Page 30A
Letter from Prof. Z. K. Matthews to Dr. H. P. Van Dusen
Pearson Street Books Vol 2 Page 45B
Pearson Street Books Vol 4 Page 29B
Pearson Street Books Vol 1 Page 75A
Pearson Street Books Vol 1 Page 85A
Pearson Street Books Vol 4 Page 29C
Schenectady County Deed D1117m
Pearson Street Books Vol 1 Page 75B