Bell Laboratories record.

v.1-2 (1925-26); v.3-4 (1926-27); v.5-6 (1927-28); v.5-6 1927-1928; v.7 1928/29; v.7 (1928-29); v.8 (1929-30); v.8 Sept 1929-Aug1930; v.9 (1930-31); v.9 Sept 1930-Aug1931; v.10 (1931-32); v.10 Sept 1931-Aug1932; v.11-12 (1932-34); v.12 Sept 1933-Aug1934; v.13-14 (1934-35); v.13 Sept 1934-Aug1935; v.14 Sept 1935-Aug1936; v.15 (1936-37); v.15 Sept 1936-Aug1937; v.16 (1937-38); v.16 Sept 1937-Aug1938; v.17 (1938-39); v.17 Sept 1938-Aug1939; v.18 (1939-40); v.18 Sept 1939-Aug1940; v.17/18(1938/1940); v.19 (1940-41); v.19 Sept 1940-Aug1941; v.20 (1941-42); v.20 Sept 1941-Aug1942; v.19/20(1940/1942); v.21 (1942-43); v.21 Sept 1942-Aug1943; v.22 (1943-44); v.22 Sept 1943-Aug1944; v.21/22(1942/1944); v.23 (1945); v.23-24 1945-46; v.24 (1946); v.25 (1947); v.25-26 1947-48; v.26 (1948); v.27 (1949); v.27-28 1949-50; v.28 (1950); v.29 1951; v.30 1952; v.31 1953; v.32 1954; v.33 1955; v.34 1956; v.35 1957; v.36 1958; v.37 1959; v.38 1960; v.39 1961; v.40 1962; v.41 1963; v.42 1964; v.43 1965; v.44 1966; v.44-45 1966-1967; v.45 1967; v.46 1968; v.47 1969; v.48 1970; v.49 1971; v.49-50 1971-1972; v.50 1972; v.51 1973; v.52 1974; v.53 1975; v.54 1976; v.55 1977; v.56 1978; v.56-57(1978-1979); v.57 1979; v.58 1980; v.58-59(1980-1981); v.59 1981; v.59-60 1981-1982; v.60 1982; v.61 1983; index v.1-7 1925/29; index 8-12