| 166th New York State Legislature | |||||
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 New York State Capitol (2009) | |||||
| Overview | |||||
| Legislative body | New York State Legislature | ||||
| Jurisdiction | New York, United States | ||||
| Term | January 1, 1947 – December 31, 1948 | ||||
| Senate | |||||
| Members | 56 | ||||
| President | Lt. Gov. Joe R. Hanley (R) | ||||
| Temporary President | Benjamin F. Feinberg (R) | ||||
| Party control | Republican 1947: (41–14–1) 1948: (40–15–1) | ||||
| Assembly | |||||
| Members | 150 | ||||
| Speaker | Oswald D. Heck (R) | ||||
| Party control | Republican 1947: (109–40–1) 1948: (107–42–1) | ||||
| Sessions | |||||
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The 166th New York State Legislature, consisting of the New York State Senate and the New York State Assembly, met from January 8, 1947, to March 13, 1948, during the fifth and sixth years of Thomas E. Dewey's governorship, in Albany.