Principal, Karl P. Lowell, Building Contractor, Los Angeles, CA, c. 1936.

In 1936, Lowell lived at 930 South Mansfield Street, Los Angeles, CA.

Lowell served as a witness at the naturalization ceremony of architect Gordon B. Kaufmann (1888-1949) on 08/10/1936 in Los Angeles. He had known Kaufmann since 01/01/1931, according to the naturalization form.