
Artists' drawing aid comprising folding concave lens and folding Claude Lorrain mirror
1875-1900
1875-1900
1834-1857
1840-1857
1827-1856
1828-1857
1828-1856
1903
1828-1857
1828-1857
1828-1857
1828-1857
1880-1889
1834-1857
1872
1872
1844
1834-1857
1833-1857
1828-1857
1903
1903
1903
1837
1890
1854-1864
1875-1900
1828-1857
1842
1903
1954
1828-1857