| Title | Union of Post Office Workers. Birmingham H.O. Postmen's Branch. Annual report and balance sheet, 1921 (2nd); 1923; 1925; 1927; 1928; 1930 – . 1921 – NOTE - Reports for 1920; 1922; 1924; 1926; 1929 wanting. Post Office Workers (Union of), Birmingham District Council. |