It fell to his lot, now, to stipulate for secrecy.
There are no more uses of "stipulate" in the book.
Show samples from other sources
That seemed to be his only stipulation.
Kiera Cass -- The Elite
" After reading Lincoln’s Proclamation of Amnesty and Reconstruction in December, 1863, which stipulated southern acceptance of emancipation as a condition of peace, another Arkansas soldier, a planter, wrote his wife that Lincoln not only wanted to free the slaves but also "declares them entitled to all the rights and privileges as American citizens.
James M. McPherson -- What They Fought For - 1861-1865