Define "bread line." During what time period were these common in America?

Bread lines were lines on which people waited to receive free bread, usually given out by a church or other religious institution or a charity. Bread lines and soup kitchens were common during the Great Depression, which started with the stock market crash of 1929 and lasted until about 1939. By 1933, one quarter of Americans were unemployed, and the federal government had not yet stepped in, as it would under Franklin D. Roosevelt starting in that year, to help provide jobs and money to Americans. People were largely reliant on private charities to dispense free food, such as on bread lines or in soup kitchens. Asking for public charity was a new experience for most Americans at that time, and one that many people found deeply shaming, though it was necessary. Many wanted jobs but could not find any.