In Washington, D.C., Whitman's friend Charley Eldridge helped him obtain part-time work in the army paymaster's office, leaving time for Whitman to volunteer as a nurse in the army hospitals. He would write of this experience in "The Great Army of the Sick", published in a New York newspaper in 1863 and, 12 years later, in a book called "Memoranda During the War". He then contacted Emerson, this time to ask for help in obtaining a government post. Another friend, John Trowbridge, passed on a letter of recommendation from Emerson to Salmon P. Chase, Secretary of the Treasury, hoping he would grant Whitman a position in that department. Chase, however, did not want to hire the author of such a disreputable book as "Leaves of Grass".