https://en.wikipedia.org/wiki/Wallingford_Riegger
Wallingford Riegger - Wikipedia
wallingford rieggerwikipedia
https://www.musiciansfriend.com/books-sheet-music-media/associated-piano-quintet-op-47-score-and-parts-ensemble-series-composed-by-wallingford-riegger/k26815000000000
Associated Piano Quintet, Op. 47 (Score and Parts) Ensemble Series Composed by Wallingford Riegger...