Harman-Kardon - Model 900+ Receiver - Original Magazine Ad -

Perreaux-Harman/Kardon - Audio/HK495i Receiver - Original Magazine Ad - 1980

Harman-Kardon - Seven Twenty Receiver - Original Magazine Ad -

ADC - Model 606 Receiver - Original Magazine Ad -

Harman-Kardon - TDC33 Receiver-Reel Recorder - Original Magazine Ad - 1968

Harman/Kardon - HK3600 Receiver - Original Magazine Test Report - 1992

Harman Kardon HK580I Receiver Owners Manual

Harman-Kardon- Model TA-120 - Receiver - Original Service Manual -1957