131 books
David Dunlap Observatory Logbook, April 1944- February 1945 (Volume 13, April 1944- February 1945, Plate Nos. 9981-10915)
David Dunlap Observatory Logbook, July 1983-November 1984 (58, July 1983-November 1984, Plate Nos. 47831-48712)
David Dunlap Observatory Logbook, October 1950- March 1952 (Volume 21, October 1950- March 1952, Plate Nos. 17816-18964)
David Dunlap Observatory Logbook, August 1949- October 1950 (Volume 20, August 1949- October 1950, Plate Nos. 16416-17815)
David Dunlap Observatory Logbook, June 1953-May 1954 (Volume 23, June 1953-May 1954, Plate Nos. 20064-21265)
David Dunlap Observatory Logbook, July 1975-May 1976 (Volume 48, July 1975-May 1976, Plate Nos. 39611-40589)
David Dunlap Observatory Logbook, August 1981-July 1982 (56, August 1981-July 1982, Plate Nos. 46096-46957)
David Dunlap Observatory Logbook, February 1969- September 1969 (Volume 40, February 1969- September 1969, Plate Nos. 31807-32574)
David Dunlap Observatory Logbook, May 1971-June 1972 (Volume 43, May 1971-June 1972, Plate Nos. 34451-35715)
David Dunlap Observatory Logbook, October 1964-June 1965 (Volume 34, October 1964-June 1965, Plate Nos. 27850-28444)
David Dunlap Observatory Logbook, January- November 1972 (Volume 44, January- November 1972, Plate Nos. 35716-36769)
David Dunlap Observatory Logbook, July 1982-July 1983 (57, July 1982-July 1983, Plate Nos. 46958-47830)
David Dunlap Observatory Logbook, January 1964-October 1964 (Volume 33, January 1964-October 1964, Plate Nos. 27358-27849)
David Dunlap Observatory Logbook, July 1970- May 1971 (Volume 42, July 1970- May 1971, Plate Nos. 33384-34450)
David Dunlap Observatory Logbook, October 1957-March 1959 (Volume 27, October 1957-March 1959, Plate Nos. 24117-24626)
David Dunlap Observatory Logbook, November 1984-October 1985 (59, November 1984-October 1985, Plate Nos. 48713-49463)
David Dunlap Observatory Logbook, September 1969- July 1970 (Volume 41, September 1969- July 1970, Plate Nos. 325575- 33383)
David Dunlap Observatory Logbook, March 1966-September 1966 (Volume 36, March 1966-September 1966, Plate Nos. 28935-29867)
David Dunlap Observatory Logbook, April 1978-March 1979 (52, April 1978-March 1979, Plate Nos. 42539-43302)
David Dunlap Observatory Logbook, October 1985-February 1987 (60, October 1985-February 1987, Plate Nos. 49464-49897)
David Dunlap Observatory Logbook, March 1979-December 1979 (53, March 1979-December 1979, Plate Nos. 43303-44200)
David Dunlap Observatory Logbook, June 1977-April 1978 (51,, Plate Nos. 41672-42538)
David Dunlap Observatory Logbook, September 1964-July 1967 (Volume 37, September 1964-July 1967, Plate Nos. 29868-30558)
David Dunlap Observatory Logbook, August 1961-June 1962 (Volume 30, August 1961-June 1962, Plate Nos. 25747-26176)