Description | English: Silhouette of a grand piano, from an advertisement for R. Hupfer & Co. pianos |
Date | 1925 |
Source | Advertisement inĀ Velhagen & Klasings Monatshefte (https://archive.org/details/velhagen-klasings-monatshefte-1925-heft-1/page/13/mode/2up?view=theater) |
Author | Anonymous |