index


1897-1899
1900-1902
1903-1904
1905-1906
1907-1909
1910-1919
1920-1924
1925-1929
1930-1931
1932
1933
1934
1935
1936
1937
1938-1939

Autograph request

Postcard sent by Bray to Valdemar Poulsen on 5th April 1913 asking for his autograph.

Valdemar Poulsen (23 November 1869 - 23 July 1942) was a Danish engineer who made significant contributions to early radio technology. He developed a magnetic wire recorder called the telegraphone in 1898 and the first continuous wave radio transmitter, the Poulsen arc transmitter, in 1903, which was used in some of the first broadcasting stations until the early 1920s.

Curios and Autographs
Autograph Postcard Types
Where he lived
Some photographs
Scrapbook
Cigarette Cards
Cartoon by Michael Leigh