- Technical World 1913-02 1214 visits
- Technical World 1914-01 1073 visits
- Technical World 1912-12 1104 visits
- Technical World 1914-04 1373 visits
- Technical World 1913-12 1535 visits
- Technical World 1913-09 1426 visits
- Technical World 1913-07 1826 visits
- Technical World 1913-03 1360 visits
- Technical World 1912-08 1544 visits
- Technical World 1912-05 1849 visits