...They would know better; they have never considered the thickness of my walls, the vigilance of my officers, the number of rounds we go... 
Alexandre Dumas, Pere 「The Man in the Iron Mask」
...He sat himself down upon the threshold, watching his master with the vigilance of a sentinel, jealous to receive either his first waking look or his last dying sigh...
Alexandre Dumas, Pere 「The Man in the Iron Mask」
...I marked the effect on the garrison of Zenda: they ceased to be seen abroad; and any of my men who went near the Castle reported that the utmost vigilance prevailed there...
Anthony Hope 「The Prisoner of Zenda」
... No spoor, howeverfaint, could elude the keen vigilance of his senses...
Edgar Rice Burroughs 「Tarzan and the Jewels of Opar」
...Sergeant of Pennsylvania declared: "It is notoriousthat, in spite of the utmost vigilance that can be employed,African negroes are clandestinely brought in and sold asslaves...
W. E. B. Du Bois 「The Suppression of the African Slave Trade to the United States of America」
..." Probably the Bushmen had been subsisting on a store hidden under ground, which had eluded the vigilance of their visitors...
David Livingstone 「Missionary Travels and Researches in South Africa」
...Heredoubled his vigilance in every direction...
Grant Allen 「An African Millionaire」
...It was never submitted to the Vigilance Committee, for the reason, that it was not considered a matter belonging thereto...
William Still 「The Underground Railroad」
...Tyler?" said an inquisitive member of the Vigilance Committee...
William Still 「The Underground Railroad」
..., if he would engage to deliver his wife into the hands of the Vigilance Committee of Philadelphia...
William Still 「The Underground Railroad」
... The Vigilance Committee's first knowledge of either of these memorable personages was brought about in the following manner...
William Still 「The Underground Railroad」
... In the quiet and security of the Vigilance Committee Room, Cordelia related substantially the following brief story touching her relationship as a slave to Mrs...
William Still 「The Underground Railroad」
...who is the head of your Vigilance Committee...
William Still 「The Underground Railroad」
... While in the city, he enjoyed the hospitalities of the Vigilance Committee, and the greetings of a number of friends, during the several days of his sojourn...
William Still 「The Underground Railroad」
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