E.T.H. Frederick T. Haneman, M.D. (born 1863) was an American author, known for being a main contributor to the Jewish Encyclopedia

Jewish Encyclopedia

The Jewish Encyclopedia is an encyclopedia originally published in New York between 1901 and 1906 by Funk and Wagnalls. It contained over 15,000 articles in 12 volumes on the history and then-current state of Judaism and the Jews as of 1901...

.

Haneman lived and worked in Brooklyn

Brooklyn

Brooklyn is the most populous of New York City's five boroughs, with nearly 2.6 million residents, and the second-largest in area. Since 1896, Brooklyn has had the same boundaries as Kings County, which is now the most populous county in New York State and the second-most densely populated...

, New York

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

. While writing article for the Jewish Encyclopedia, he was a Managing Editor of The New York Journal. He also wrote the American Jewish Yearbook. and was a main contributor to the New International Encyclopedia

New International Encyclopedia

The New International Encyclopedia was an American encyclopedia first published in 1902 by Dodd, Mead and Company. It descended from the International Cyclopaedia and was updated in 1906, 1914 and 1926.-History:...

 on the subject of toxicology

Toxicology

Toxicology is a branch of biology, chemistry, and medicine concerned with the study of the adverse effects of chemicals on living organisms...

.