Morris Silverman

Rabbi Morris Silverman (1894–1972) was a Conservative rabbi as well as an editor and writer of Jewish prayer books. In 1939, he edited the High Holiday Prayer Book, popularly known as the "Silverman Machzor" which became the official prayer book for Rosh Hashanah and Yom Kippur for the United Synagogue of America of the Conservative Movement for over half a century.Likewise, his manuscript for a siddur became the basis of the Sabbath and Festival Prayer Book (Seder Tefilot Yisrael), the official prayer book for the Conservative movement. Silverman served as rabbi for The Emanuel Synagogue in West Hartford, Connecticut.

https://en.wikipedia.org/wiki/Morris_Silverman