Canada
can-19550000-h1-001
page = 2
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Width: 139 mm
Height: 88 mm
Location: Ice Hockey Volume VII
Stamp ID = 6140
The Warwick brothers were members of the 1955 World Championship hockey team, the Pentictov V's. A little bit more can be found about Dick Warwick in this article from the Penticton Herald.
Post card shows Grant Warwick
Post card shows Dick Warwick
Post card shows Bill Warwick
From Linn's "Stamp Issuing Entities Of The World" page
Canada (1851-)
Stamp-issuing status: active; Population: 29,123,194. An independent state within the British Commonwealth, occupying the northern part of North America.