Complex sentence: He worked for McKim, Mead & White and Bertram Grovesnor Goodhue from 1916 to 1923, and later formed a series of architectural partnerships, until 1941, when he joined with Max Abramowitz to form the firm of Harrison & Abramowitz.
Split into simpler sentences: He worked for McKim, Mead & White and Bertram Grovesnor Goodhue from 1916 to 1923, and later formed a series of architectural partnerships. In 1941 Harrison joined with Max Abramowitz to form the firm of Harrison & Abramowitz.