It later became Reform and is known as the Wilshire Boulevard Temple, the oldest synagogue in Los Angeles.

[1] He received a classical Jewish education, including rabbinical training and certification as a schochet, a ritual slaughterer for kosher meat.

[1][3] He moved to San Francisco in 1852, where he briefly partnered with Joseph Brandenstein and established a dry goods store.

[3] Harris lived with his family, and his wife taught the young man to read and write English.

Newmark also established Congregation B'nai B'rith in 1862, the oldest synagogue in Los Angeles.

[1][2] Harris's older brother, Joseph P. Newmark, had settled in Los Angeles before him and they were in business together for a time.