Nine dye fastness test cards with various exposures on the threads
1909
1909
1906
1907
1912-1913
1928
1936
1909-1916
1912-1914
1915-1925
1912
1909-1912
1916
1912
1937
1942
1912
September 1929
1905-1915
1905
1938
1914-1916
1938
1938
1906
1908
1909
1930
1956
1912
1909-1910
1916-1917
1910-1917
1912-1913
1912-1914
Feb 1932-July 1934
1938
1930
1918-1923
1913-1914
1930-41
1910 onwards
1918
1935-41