TRANSISTOR CIRCUITS FOR CONSTRUCTOR NO.4 - E.N BRADLEY
Vintage Harvard M-500 Solid State Transistor Radio for Spares or Repair
Vintage Bush TR82C transistor radio For Spares And Repairs
Vintage Philips transistor radio for repair or spares
Radio Circuits By W E Miller For Service Engineers Students & Trainees Hardback
Radio Constructor Magazine - October 1951
Modern Wireless + Wireless Constructor Magazine's (DVD) Ham Radio Amateur