Silent Sentinels happened in 1917.
Brinda Somaya has written: 'Silent sentinels' -- subject(s): Architecture
The National Women's Party itself was not labeled "silent sentinels". Beginning in January 1917, a group of women from NWP stood in front of the White House every day with banners that read "Mr President, What Will You Do For Woman Suffrage?" and "How Long Must Woman Wait For Liberty?". These women were the ones called "silent sentinels". They also carried purple, white, and yellow flags. After June 1917, the picketing women were regularly arrested and sometimes subject to mob violence, but continued to appear daily and picket President Wilson's appearances at events outside the White House.
The Sentinels was created in 1971.
Silent Storm happened in 2003.
Silent Scope happened in 1999.
Silent Assault happened in 1990.
Silent Hunter happened in 1996.
Silent Debuggers happened in 1991.
Silent Bomber happened in 1999.
Sentinels of Silence was created in 1971.
Sentinels novels was created in 2006.
The Three Sentinels was created in 1972.