This drawing is likely to have been executed by Sebastian and Pierre Erard themselves, or perhaps a member of their staff, as part of the design process at their workshops or showroom. The Erard brothers were piano forte and harp makers based in Paris and London, and this photograph was commissioned by theor company.
This is part of the Series: HBL01/01 Series Of Photographic Negatives And Prints; within the Collection: HBL01 The Bedford Lemere Collection
Source: Historic England Archive
Photographer: Boucher, Adolphe Augustus: Bedford Lemere And Company