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Includes bildstatistisches elementarwerk (elementary work) which consist of infographics focusing on economic and society. Potentially used by Catharine Kerlin Wilder in Geneva, Switzerland when she taught. The name inside of the front cover, is her brother's name, GIlbert Kerlin.

Includes correspondence from Thornton, Amos Niven, and other correspondents.

Contributions by Thornton Wilder.