As part of the Works Progress Administration in the 1930s, writers and photographers were employed to document regional foodways. They collected recipes, songs, poems, and interviews with cooks and eaters from all over the United States. A large reference book on regional American food was planned, but the program was abruptly ended after the bombing of Pearl Harbor and most of the collected material was never published.
Some of the prized sets of objects collected during this project were community cookbooks. Unlike mass produced cookbooks, these community cookbooks showed what people in different regions were actually cooking and eating because the contributors were sharing recipes they liked and used. They were also valuable sources of information on the types of recipes people were making during the Great Depression years, when lack of income greatly limited what ingredients people could afford to purchase. Because these community cookbooks were not printed in large numbers and were often of cheap quality, they did not always survive.
After WWII, the housing boom and manufacturing advancements had a huge impact on the kitchen. It became a showcase of economic status and moved to the front of the house. Open floor plans dominated, allowing mothers to see their children while in the kitchen and allowing them to join in dinner and cocktail parties without being stuck preparing food in a closed-off kitchen.
Today the kitchen is seen as the heart of the home, and is used as a place to gather and socialize. Food preparation is celebrated and food is the easiest way for most people to identify with their cultural heritage.