To raise money for the war effort, the United States government used taxes and bonds. Liberty Bonds were loans to the government, paid by Americans and paid back with interest. From April 1917 to April 1919, Congress authorized five bond drives. In the third drive alone, the government produced nine million posters, five million window stickers, and 10 million buttons. This poster, from the Second Liberty Loan drive, uses guilt to convince people to give money.