Burnham Brothers was the firm of Daniel H. Jr. and Hubert Burnham, sons of prominent Chicago architect Daniel Burnham, and one of the two successor firms to his D.H. Burnham & Company. After Burnham senior died in 1912, D.H. Burnham & Co. became Graham, Burnham & Co., named after Burnham's main partner, Ernest Graham, and Burnham's two sons. When the two brothers left in 1917 to start their own firm, the remaining members of Graham, Burnham & Co. formed Graham, Anderson, Probst & White – the main successor firm, which carried on Daniel Burnham's remaining work and went on to become one of the major architectural firms in Chicago during the 1920s through the 1940s. The brothers at first confused matters by reviving the name D.H. Burnham Co. (nearly but not exactly like the original D.H. Burnham & Co.), which they maintained for 11 years until 1928, when the firm officially became Burnham Brothers. In 1933, the firm joined with C. Herrick Hammond to form Burnham & Hammond.