Growth of charges for secondary boycott violations: 10(l) charges, 1948–1960
| 10l | |
|---|---|
| 1948 | 17 |
| 1949 | 32 |
| 1950 | 22 |
| 1951 | 32 |
| 1952 | 35 |
| 1953 | 44 |
| 1954 | 66 |
| 1955 | 59 |
| 1956 | 78 |
| 1957 | 98 |
| 1958 | 127 |
| 1959 | 129 |
| 1960 | 219 |
Source: National Labor Review Board annual reports, 1948–1960.