The June 1948 issue of Radio Craft showed this circuit for a one-tube “reflex” receiver, so named because the tube served double duty.  The input was connected to the antenna circuit, and the tube served as an RF amplifier, with the output going to a then relatively new 1N34 diode.  The audio then went through a transformer and volume control, where it was fed back to the tube, which then amplified the audio.  The audio then passed through an RF choke on its way to the speaker.

The circuit had been sent to the magazine by one Arthur S. Bean of Baltimore.  The magazine noted that his design provided good volume and moderate selectivity.