Machine Sûre & Commode Pour Tirer des Silhouettes by Rudolph Schellenburg, c. 1783, engraving on paper, from the National Portrait Gallery - NPG-AD-NPG 2011 1, Johann Rudolph Schellenberg, circa 1783

Machine sûre & commode pour tirer des silhouettes by rudolph schellenburg, c. 1783, engraving on paper, from the national portrait gallery which has explicitly released this digital image under the cc0 license. (https://npg. Si. Edu/object/npg_ad_npg. 2011. 1). Date: circa 1783.