Brief Description: The Mailert family stems from Kassel. Karl Lucius Mailer was the author of *Erster Elementarbuch der Hebraischer sprache* and *Kalendar fur Israeliten 5613*. His brother, Augustus, was living in Philadelphia by 1832. Most of the approximately one hundred letters, dated 1832-1861, are the correspondence of Augustus. Augustus appears to have made long business trips as far as Whitehall, Illinois. The letters are often in German, but the letters of another brother, Charles Lucius, who stayed in Kassel, are in English. The letters of Isaac Heynemann, who was a cousin living in Richmond, Virginia, are in Yiddish. There are also German travel documents granted to Augustus in 1823-1832, his ketubah (undated) relating to his marriage to Adilen Goldsmit, and two family trees.

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