Leaves of Grass was widely distributed and stirred up significant interest, in part due to Emerson's praise, but was occasionally criticized for the seemingly "obscene" nature of the poetry. Geologist Peter Lesley wrote to Emerson, calling the book "trashy, profane & obscene" and the author "a pretentious ass". Whitman embossed a quote from Emerson's letter, "I greet you at the beginning of a great career", in gold leaf on the spine of the second edition, effectively inventing the modern book blurb. Laura Dassow Walls, Professor of English at the University of Notre Dame, wrote: "In one stroke, Whitman had given birth to the modern cover blurb, quite without Emerson's permission." On July 11, 1855, a few days after Leaves of Grass was published, Whitman's father died at the age of 65. In the months following the first edition of Leaves of Grass, critical responses began focusing more on the potentially offensive sexual themes. Though the second edition was already printed and bound, the publisher almost did not release it. In the end, the edition went to retail, with 20 additional poems, in August 1856. Leaves of Grass was revised and re-released in 1860, again in 1867, and several more times throughout the remainder of Whitman's life. Several well-known writers admired the work enough to visit Whitman, including Amos Bronson Alcott and Henry David Thoreau. During the first publications of Leaves of Grass, Whitman had financial difficulties and was forced to work as a journalist again, specifically with Brooklyn's Daily Times starting in May 1857. As an editor, he oversaw the paper's contents, contributed book reviews, and wrote editorials. He left the job in 1859, though it is unclear whether he was fired or chose to leave. Whitman, who typically kept detailed notebooks and journals, left very little information about himself in the late 1850s. Civil War years As the American Civil War was beginning, Whitman published his poem "Beat! Beat! Drums!" as a patriotic rally call for the North. Whitman's brother George had joined the Union army in the 51st New York Infantry Regiment and began sending Whitman several vividly detailed letters of the battle front. On December 16, 1862, a listing of fallen and wounded soldiers in the New-York Tribune included "First Lieutenant G. W. Whitmore", which Whitman worried was a reference to his brother George. He made his way south immediately to find him, though his wallet was