- Armstrong Super-Regenerative Circuit Book -1922A 3031 visits
- Clapp-Eastham Receivers -1922A 2190 visits
- Good Housekeeping 1938-01 2450 visits
- Good Housekeeping 1938-02 2209 visits
- Good Housekeeping 1938-07 2915 visits
- Scientific American 1891-04-04 1779 visits
- Scientific American 1891-04-18 1839 visits
- Scientific American 1902-12-27 1467 visits