Complex sentence: Hyman Judah Schachtel, (1907-1990), was rabbi of Congregation Beth Israel of Houston from 1943 to 1975, continuing there as rabbi-at-large for the remainder of his life.
Split into simpler sentences: Hyman Judah Schachtel, (1907-1990), was rabbi of Congregation Beth Israel of Houston from 1943 to 1975. For the Houston kehilla, Rabbi Schachtel continued as "rabbi-at-large" for the remainder of his life.