As recounted in Jon Clinch's The General and Julia, Samuel Clemens (who wrote under the alias Mark Twain) met President Ulysses S. Grant in the White House, introduced by a senator from Nevada. When the men crossed paths again after the end of Grant's presidency, they developed a friendship. Clemens frequently encouraged Grant to write his memoirs, but Grant always demurred, saying he wasn't a writer. That is, until financial ruin and a terminal cancer diagnosis made him fear for his wife Julia's future. Grant made arrangements with Century Magazine to write articles about Civil War battles, paid at $500 each. Century was also willing to publish his memoirs, but the standard terms of the contract—10% of royalties—were not advantageous.
In the meantime, Clemens and his niece's husband had started a publishing house, Charles L. Webster and Company. Clemens offered to publish Grant's memoir on much more favorable terms: 70% of royalties, plus an ...