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Helen Sawyer Hogg fonds
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Frank S. Hogg sous-fonds

Records in this sous-fonds offer a good outline of the educational and professional achievements of Frank Scott Hogg. Correspondence, lecture notes and related teaching files, research notes and draft manuscripts of articles all document his professional career as an astronomer. There are also draft articles for his Toronto Star column which, after his death, was taken over by his wife.

Of special mention are the notes, reports, correspondence and blueprints relating to the invention of the two-star sexton, a device designed to simplify astronomical navigation (1940-1943). The project was supported by government grants and the working models, designed and built at the Dunlap Observatory by Dr. Hogg and Dr. R.K. Young, were extensively tested by the Armed forces during World War II. Two original sextants have survived: one is housed at the National Museum of Science and Technology in Ottawa, the other at the Royal Ontario Museum in Toronto.

Nearly half of the records in this sous-fond are Frank Hogg's student papers, documenting his undergraduate course work at the University of Toronto (1922-1926) and subsequent graduate research at Harvard University culminating in his earning the first astronomy Ph.D. from this institution (1926-1929). Course notes, laboratory exercise books, statements of academic standing and scholarships provide a record of the structure and content of his education over a seven-year period. Books III, IV and V of research observations used for his Ph.D. thesis have survived along with a copy of his thesis. Books I, II and VI of his Ph.D. research were acquired earlier by the University of Toronto Archives and can be found in accession B82-0026. There are also some photos that relate to his education including his graduation portrait from the University of Toronto (1925).

In terms of personal papers, there is a small sampling of correspondence that has been filed at the beginning with his professional correspondence. For the period after 1930, correspondence found in Series I and X of the Helen Hogg fond is far more extensive. There are a few files that show his involvement in the Presbyterian Church, the Lions Club, and the Richmond Hill District High School Board that he chaired from 1949-50. Some memorabilia and some biographical files complete this scant collection of his personal life.

Hogg, Frank Scott

Clarence Augustus Chant sous-fonds

This sous-fonds includes mainly photographs collected for his book "Our Wonderful Universe" first published in 1928 and revised in 1940. There is also some related correspondence and notes that indicate that both Frank and Helen Hogg had assisted Dr. Chant in this project. Some of the images may have been used elsewhere.

Also found in this sous-fond are two astronomy exercises or lectures identified as having belonged to Dr. Chant and a file on the "Gifford Sundial" (1941).

Chant, Clarence Augustus

Articles, Manuscripts, Addresses

This is an extensive series, which documents Dr. Hogg's publishing activities. Since many of her published articles were addresses delivered at symposiums or reports made to professional committees, addresses and talks have also been included in this series. The files, usually titled by the name of the article, book or publisher contain not only manuscripts and drafts but related correspondence, notes, memos and outlines.

The arrangement of this series is as follows, starting from general articles to the specific endeavour

  • Bibliographies and lists of publications
  • General articles, addresses, contributions to encyclopedias
  • Obituaries
  • Academic Papers on Star Clusters
  • Bibliography and Catalogue of Star Clusters
  • Contributions to "Out of Old Books"
  • "The Stars Belong to Everyone"
  • Toronto Star Column
  • Miscellaneous Writings
  • Reprints

Records in this series document both Dr. Hogg's stature as an authority on variable stars and star clusters as well as her role as a teacher of popular astronomy. Draft articles and related notes and correspondence on numerous scientific papers as well as files documenting her contribution to encyclopedias and handbooks reflect both of these roles.

Notably, her work on various editions of "A Catalogue of Variable Stars in Globular Clusters" (1st ed. 1939, 2nd ed. 1955, 3rd. ed. 1973 and 4th incomplete), as well as her time spent on "A Bibliography of Individual Globular Clusters" (1947, 1st supplement 1963) is extensively documented through drafts, research data, original manuscripts. These records relate specifically to the card index found in Series IV, Star Cluster Files and Index Cards.

Graphic Records

Includes slides and photoprints documenting both Dr. Hogg's personal and professional life including family gatherings and events, trips, astronomical conferences, ceremonies, visits to various observatories. Also included are images she collected regarding the history of Astronomy as well as publicity shots of her taken for various publications.

Photoprints from B1996-0020 document the meeting of the International Astronomical Union Held in the Soviet Union [Russia], 1958. Helen Hogg, as well as other Canadian astronomers including A. Batten and S. van de Bergh, were present and can be seen in these shots.

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