Canada Post Office issued a 5 cent Meteorological stamp on March 15, 1968, to commemorate the 200th anniversary of Canada's first long-term fixed point weather observations. The weather readings commemorated by the stamp were started at Fort Prince of Wales, Churchill, by William Wales and Joseph Dymond on September 10, 1768. Daily observations by thermometer and barometer continued until August 27, 1769. Dymond and Wales were at Hudson Bay to observe the transit of Venus. Wales, one of the foremost astronomers and mathematicians of the day, was later to accompany Captain Cook on voyages around the world.
Essays
(National Archives of Canada)
Accepted Design
First Day Covers
Canada Post Office Publicity First Day Cover
To Brussels, Belgium
Canada Post Replacement Cover
Pencil address : "CPO OTT"
Overseas Mailers
David Pritchard
Usages
International Air Mail
Montreal to Paris, April 18, 1968
15 cents air mail rate to Europe
Montreal A.M.F. machine cancellation
To Munich, March 29, 1968
15 cents air mail rate to Europe