Guitars of Love
Japanese Retro - Tech
The Resly Tone RT-18

Below is my transcription of the original Resly Tone circuit, excluding the section for the infinitely variable pot on the vibrato speed (in the red box bottom left on the second schematic), which I have put in. This just enables more flexibility if desired. A scanned pdf of the original schematic is here.

Below is the modified Resly Tone circuit with improved inputs and bypass, and a slight correction down the bottom middle in the red box. Click on image for full view: