Natural Resources Canada

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. The first map shows the location of weather stations. Stations are denoted as having 25 to 30 year records within the period 1931 to 1960. As well, whether the station collected temperature data, precipitation...

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of three maps relating the effects and dependency of vegetation on environmental variables. One map shows the average annual potential evapotranspiration in inches from ground and plant surfaces for areas where there is a...

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of three maps showing the length of the growing season, the start of the growing season and the end of the growing season for the fertile regions. A fourth map shows the average length in days of the frost-free period for the...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of five maps. Two maps show, for fertile regions, the average date of the last frost in spring and the average date of the first frost in autumn. The three remaining maps show the median depth of snow cover at a scale...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of six maps. Each map shows the median depth of snow for December 31st, January 31st, February 28th, March 31st, April 30th and May 31st respectively.

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the average annual number of days with precipitation. The main map is accompanied by a supplementary map at a scale of 1:40 000 000, outlining precipitation regions. As well, climatic graphs for selected stations...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of six maps. Each map shows the average monthly precipitation for April, May, June, July, August and September.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. One map shows the average precipitation for April to September. The second shows the average precipitation for October to March.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for December, January and February.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for March, April and May.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for June, July and August.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of six maps showing the average daily minimum temperature and average daily maximum temperature for September, October and November.

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. The first map shows exploration routes of British, French and Spanish explorers of eastern and central North America between 1524 and 1912. The second map shows exploration routes of British, Danish and French...

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of three maps. The first map shows sea routes traveled by British, French, Russian and Spanish explorers between 1741 and 1794. The second map shows routes taken by explorers in search of the Northwest Passage during the...

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of two maps. The first map shows exploration routes of the Arctic between 1587 and 1941 for American, British, Canadian, Danish, German and Norwegian explorers. A 1:7 500 000 scale supplementary map detailing the exploration...

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows locations of fur trading posts for the period 1600 to 1870. The first known owner of the post (France, England, Canadian independent, XY Company, North West Company or Hudson's Bay Company) and the known length of...

Contained within the 4th Edition (1974) of the Atlas of Canada is a set of three maps. The main map shows areas for which there are 1:50 000 scale National Topographic System (NTS) map sheet coverages up to October 1970. This map also denotes whether the NTS sheets were published maps or advanced...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of 15 maps showing the evolution of Canadian territory from the state of the European colonies in North America as of 1667, to when Prince Edward Island entered confederation in 1873. These maps represent the state of...

Contained within the 4th Edition (1974) of the Atlas of Canada is a collection of nine maps showing the evolution of Canadian territory from 1876, when the district of Keewatin was created from part of the Northwest Territories, to when Newfoundland becomes the tenth and most recent province in...

Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows the chronology of selected facilities in settlements north of the 60th parallel. Selected facilities denoted include trading posts, missions, RCMP posts, post offices, weather stations and Distant Early Warning...