Annual report of Board of Supervising Engineers, Chicago Traction.

1907/08 (1st); no.1 (1907-1908); 1st (1908); 1908; 1908/09 (2nd); 2nd (1909); 1909; v.2 yr.1909; 1909/10 (3rd); no.3 (1909-1910); 3rd (1910); 1910; 1910/11 (4th); no.4 (1910-1911); 4th (1911); 1911; 1911-12 1911-1912; 1911/12 (5th); no.5 (1911-1912); 5th (1912); 1912; 6th 1912/13; 1912/13 (6th); no.6 (1912-1913); 6th (1913); 1913; v.6 yr.1913; 7th 1913/14; 1913/14 (7th); no.7 (1913-1914); 7th (1914); 1914; 1914-15 1914-1915; 8th 1914/15; 1914/15 (8th); c.1 1914/15; no.8 (1914-1915); 8th (1915); 1915; 1915-16 1915-1916; 9th 1915/16; 1915/16 (9th); c.1 1915/16; 9th (1916); 1916; 1916/17 (10th); 10th (1917); 1917; 1917-18 1917-1918; 1917/18 (11th); 11th (1918); 1918; v.11 yr.1918; 1918-19 1918-1919; 1918/19 (12th); 12th (1919); 1919; 1919-20 1919-1920; 1919/20 (13th); c.1 1919/20; 1920; 1920/21 (14th); 13th (1921); 1921; 1921/22 (15th); 14th (1922); 15th (1922); 15th, 1922; 1922; 16th 1922/23; 1922/23 (16th); 1923; 17th 1923/24; 1924; 18th (1924/25); 1925; 1925-26 1925-1926; 19th (1925/26); 1926; 20th (1926/27); 1927; 21st (1927/28); 1928-1929; v.22 1929; 23rd (1929/30); 1930; v.23 1930; 1930/1931-1931; v.24 1931; v.25 1931-32; 1932-1933; v.26 1933; 1933/1934-1934; v.27 1934; 1934/1935-1935; v.28 1935; 1935/1936-1936; v.29 1936; 1936/1937-1937; v.30 1937; 1938; v.31 1938; 1939-1940; v.33 1940; 1940/1941-1941; v.34 1941; 1942; v.35 1942; 1942/1943-1943; v.36 1943; 1943-44 1943-1944; 37 1944; 1944; v.37 1944; 1944/1945-1945; v.38 1945; 1946; v.39 1946; 1947; 14th; 11th; 15th; 12th; 4th; 13th; 7th; 9th; 10th; 5th; 8th; 6th