Donald Geary was a Connecticut native, attending Hamden High School, but was such a hockey star that he was recruited to play one season with the St. Catharines’ Falcons of the Ontario Junior Hockey League in 1945-46. Geary played in three games for the US at the 1948 Winter Olympics. In 1948-49 he played briefly for the New Haven Bears in the Atlantic Hockey League.
|1948 Winter||21||Sankt Moritz||Ice Hockey||Men's Ice Hockey||United States||USA||AC|
|1948 Winter||21||Sankt Moritz||Ice Hockey||United States||USA||Final Standings||AC||1948-01-30|||||||
|1948 Winter||21||Sankt Moritz||Ice Hockey||United States||USA||Round-Robin||Match #1||2||1948-01-30||SUI 5, USA 4||0||0||0|
|1948 Winter||21||Sankt Moritz||Ice Hockey||United States||USA||Round-Robin||Match #5||1||1948-01-31||USA 23, POL 4||0||0||4|