Lawrence Rosen is William Nelson Cromwell Professor of Anthropology at Princeton University in Princeton, N.J., and an adjunct professor of law at Columbia University Law School. He was, in 1981, among the first winners of the MacArthur Foundation “genius grants.” His interest is in contemporary Muslim culture and law.

The Ackman & Ziff Family Genealogy Institute offers reference works, databases and workshops for researching family histories. The institute is in the Center for Jewish History in New York City.

The American Jewish Historical Society is in the Center for Jewish History in New York City. It is a collection of American Jewish holdings from the 16th century to the present. Paul B. Warhit is president. Contact Nicole Straus.

Yeshiva University, based in Manhattan, is the flagship school of higher education in Orthodox Judaism in the United States. Yeshiva is identified with the Modern Orthodox movement.

The Drisha Institute for Jewish Education is a school created for Jewish women who want to study advanced Hebrew texts. Rabbi David Silber is its founder and dean. It is in New York City.

The Academy for Jewish Religion is a rabbinical and cantorial school in Riverdale, N.Y., that serves all branches of Judaism. Ora Horn Prouser is executive vice president and dean.

Joey Weisenberg is the creative director of the Hadar Center for Communal Jewish Music. He is a mandolin player who is bringing ancient Jewish nigunim, or wordless rabbinic hymns, back into synagogue music. He was named to Jewish Week’s “36 Under 36: The Next Wave of Jewish Innovators” (scroll down).

Daniel Sieradski is the founder of Jewschool, a blog that covers everything from politics to religion to art from a Jewish perspective. It has 50,000 readers and contributors from 80 countries. He was named to Jewish Week’s “36 Under 36: The Next Wave of Jewish Innovators.”

Rabbi Elie Kaunfer is a co-founder of Mechon Hadar: An Institute for Prayer, Personal Growth and Jewish Study, an independent minyan in New York City that has led to a network of similar, postdenominational minyanim across the country. He was named to Jewish Week’s “36 Under 36: The Next Wave of Jewish Innovators.”