Pedals, pedals, pedals – resources for organists – The Lady Organist
Pedal keyboard - Wikipedia
Studiologic MP-113 Midi Bass Pedal – Thomann UK
DIY Organ and keyboard pedalboard project (bass pedals) - YouTube
Tearing Apart An Organ And Making A MIDI Keyboard | Hackaday
How difficult is it to play the pedals on an organ? - Quora
What stops do I use? Part 4, Basics of pedal registration · Sing Amen
Amazon.com: Donner Sustain Pedal, Keyboard Piano Pedal Universal Damper Foot Pedal for Digital Piano MIDI Keyboard Electronic Organ Synthesizer, With Polarity Switch, 1/4 Inch Jack, DSP-003 : Musical Instruments