Caption: Fig. 1. — Grenie's organ pipe fitted with free-reed vibrator. A, Tuning wire. D, Free reed. R, Reed-box. B,C, Feed pipe with conical foot. T, Part of
4.0 Creative Commons Attribution-Share Alike 4.0 truetrue English Common reed at the stream “Heubach” in Hausdülmen, Dülmen, North Rhine-Westphalia, Germany
Attribution-Share Alike 2.0 Generic license. Attribution: Reed beds and pasture near Tixall in Staffordshire by Roger D Kidd You are free: to share – to copy, distribute