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A Modern Delaware Tale
Published in Proceedings of The American Philosophical Society, in 1902, in volume 41, issue 168, pages 20-34
Areography
Published in Proceedings of The American Philosophical Society, in 1902, in volume 41, issue 170, pages 225-234
Systematic Geography
Published in Proceedings of The American Philosophical Society, in 1902, in volume 41, issue 170, pages 235-259