Popular Electronics Magazine May 1997 Build a DC Motor-Speed Controller

Popular Electronics Magazine April 1997 Build a Lie Detector GSR Monitor

Popular Electronics Magazine February 1997 Build a 22-Watt Amplifier Car Stereo

Popular Electronics Magazine January 1998 Build the Electronic Climate Control

Popular Electronics Magazine January 1999 Build this Seeing Eye Roving Robot

Magazine Country Walking Mag January 1997 ra

Popular Electronics Magazine January 1971

Popular Electronics Magazine January 1974