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Manuscript

Increase Lapham letter

Date: 06 28 1850
Description: Letter from Increase Lapham to his wife, Ann Maria Alcott, in Milwaukee. Lapham was at Aztalan and wrote to Anna regarding the geology of the region. He in...
Manuscript

Profile of a Semi-Diurnal Spring Tidal Curve

Date: 12 1860
Description: Graph showing the profile of a semi-diurnal spring tidal curve deduced from 5452 half hourly ordinates obtained from the records of self registering tide g...

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