Frank Jones (HIJ)

Spark Gaps 1
964
Spark Gaps 1

Spark Gaps 2
965
Spark Gaps 2

Spark Gaps 3
966
Spark Gaps 3

Spark Gaps On
967
Spark Gaps On

Spark Long
968
Spark Long

Spark
969
Spark

Spark1
970
Spark1

Special Light Socket Connection
971
Special Light Socket Connection

Squeeze Bulb
972
Squeeze Bulb

Jeff Behary