Source: Board of Governors of the Federal Reserve System (US)  

Release: H.15 Selected Interest Rates  

Units:  Percent, Not Seasonally Adjusted

Frequency:  Not Applicable

Effective Date.

Early historical data for this series include the following:

1929 range of 5.5 to 6
1930 range of 3.5 to 6
1931 range of 2.75 to 5
1932 range of 3.25 to 4
1933 range of 1.5 to 4
1934 (date uncertain) value of 1.5
1935 (date uncertain) value of 1.5
1947-12 (specific date uncertain) value of 1.75
1948-08 (specific date uncertain) value of 2
1950-09-22: 2.25
1951-01-08: 2.5
1951-10-17: 2.75
1951-12-19: 3
1953-04-27: 3.25
1954-03-17: 3

EFFECTIVE 4/16/73 DUAL PRIME RATE