United States
usa-19480000-b-001
page = 1
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Width: 242 mm
Height: 105 mm
Location: Ice Hockey Volume XCII
Stamp ID = 4467
From Wikipedia
The Boston Olympics are a defunct farm team for the Boston Bruins. They began play during the 1940-41 Eastern Amateur Hockey League season. The Olympics were often referred to by the shortened name the "Pics" and the franchise remained active until the 1951-52 season.
From Linn's "Stamp Issuing Entities Of The World" page.
United States of America (1847-)
Stamp-issuing status: active; Population: 248,709,873 (1990). Republic occupying the central portion of North America, along with Alaska, Hawaii and a large number of island possessions in the Caribbean Sea and the Pacific Ocean.