The golden age of postcards coincided with several momentous events in San Francisco history, including a major earthquake and fire destroying over one third of the city, rapid reconstruction, strikes, political upheaval, parades, festivals, and a world's fair. From World War I through World War II, jazz-age San Francisco experienced a building boom of houses, skyscrapers, and engineering marvels such as the Bay Bridge and Golden Gate Bridge, creating a marvelous Bay Area landscape documented on thousands of ubiquitous, inexpensive picture postcards popular with both visiting tourists and local residents.