
Alarm whistle for use by psychiatric warders
1890-1914
1890-1914
1890-1900
1851-1900
1862-1900
1895-1905
1914
1860-1880
1875-1878
1865-1877
1890-1910
1866-1870
1876-1900
1890-1900
1890-1900
4000-2001 BCE
1890
1878
1870
c.1912
c.1912
c.1912
1855
1892-1902
1856
1904
1911
1860
1855
1865
1897
1897
1899
1901
1901
1896
circa 1860
1857
1897
1897
circa 1880
1915
1905
1903
1890
1903 (original); 1982 (model)
1870
1913
1901
1895
1877