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Helen Sawyer Hogg fonds
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"The History of Variable Stars, 1850-1920"
"The History of Variable Stars, 1850-1920"
"The History of Variable Stars, 1850-1920"
"The History of Variable Stars, 1850-1920"
Editing - People and Places
Editing - People and Places
Canadian Club Talk
Canadian Club Talk
"The Canadian Telescope in Chili", draft report
"The Canadian Telescope in Chili", draft report
"Popularizing Astronomy", draft
"Popularizing Astronomy", draft
Review - "A History of Time Keeping in Canada"
Review - "A History of Time Keeping in Canada"
"Patterns and Problems of Growth"
"Patterns and Problems of Growth"
Encyclopedia Britannica
Encyclopedia Britannica
Address - "Variable Stars in Globular Clusters"
Address - "Variable Stars in Globular Clusters"
Encyclopedia Britannica - "Star Clusters and Stellar Associations" (2)
Encyclopedia Britannica - "Star Clusters and Stellar Associations" (2)
Encyclopedia Britannica - "Star Clusters and Stellar Associations" (1)
Encyclopedia Britannica - "Star Clusters and Stellar Associations" (1)
"Lunar Craters Names for Canadians"
"Lunar Craters Names for Canadians"
"Lunar Craters Names for Canadians"
"Lunar Craters Names for Canadians"
Talks - Bell Canada
Talks - Bell Canada
Script - Ont. Educational Communications Authority
Script - Ont. Educational Communications Authority
Richmond Hill Naturalists
Richmond Hill Naturalists
McGraw-Hill
McGraw-Hill
McGraw-Hill (2)
McGraw-Hill (2)
McGraw-Hill (1)
McGraw-Hill (1)
McGraw-Hill
McGraw-Hill
McGraw-Hill
McGraw-Hill
McGraw-Hill
McGraw-Hill
McGraw-Hill Encyclopedia - "Star Clusters"
McGraw-Hill Encyclopedia - "Star Clusters"
Globular Cluster talks, Calgary and McMaster
Globular Cluster talks, Calgary and McMaster
Drafts for D.D.O. history, J.F.Heard and H.S.Hogg
Drafts for D.D.O. history, J.F.Heard and H.S.Hogg
Memorial Lecture - "Some Contributions of R.M. Petrie to the Study of Group Stars"
Memorial Lecture - "Some Contributions of R.M. Petrie to the Study of Group Stars"
"Astronomy and the David Dunlop Observatory, 1935-1967"
"Astronomy and the David Dunlop Observatory, 1935-1967"
"Astronomy and Colour"
"Astronomy and Colour"
Shapley Festschrift (2)
Shapley Festschrift (2)
Shapley Festschrift (1)
Shapley Festschrift (1)
"A Canadian Astronomer Looks Backward and Forward"
"A Canadian Astronomer Looks Backward and Forward"
"The Historical Importance of Astronomy"
"The Historical Importance of Astronomy"
Review - "The Discovery of Neptune"
Review - "The Discovery of Neptune"
Talk - "Astronomy in Canada Today"
Talk - "Astronomy in Canada Today"
Harper Encyclopedia
Harper Encyclopedia
Handerbuch article, post publication
Handerbuch article, post publication
Handerbuch der Physik, tables, diagrams and draft
Handerbuch der Physik, tables, diagrams and draft
Handerbuch der Physik
Handerbuch der Physik
Handerbuch der Physik, draft "Star Clusters"
Handerbuch der Physik, draft "Star Clusters"
Handerbuch der Physik, Publishers instructions
Handerbuch der Physik, Publishers instructions
Handerbuch der Physik, "Galactic Clusters"
Handerbuch der Physik, "Galactic Clusters"
"Stars that travel together" RCI lecture
"Stars that travel together" RCI lecture
"The Light and the Flame"
"The Light and the Flame"
Review - "The Royal Society Newton Tercentenary Celebrations"
Review - "The Royal Society Newton Tercentenary Celebrations"
Television and Radio Scripts and Correspondence
Television and Radio Scripts and Correspondence
"A Child's Primer of the Skys"
"A Child's Primer of the Skys"
Ontario Communications Authority. Television series.
Ontario Communications Authority. Television series.
General articles, addresses, contributions to encyclopedias
General articles, addresses, contributions to encyclopedias
Reprints
Reprints
Results 101 to 150 of 1499