As fires rage in the background, the newly of San Francisco gather at Union Square. The tall steel skeleton, then known as the Union League Building, was under construction at the time of the earthquake, later finished, and still standing on Geary Street. The Butler Building at right, also under construction at the time. Its walls peeled away during the earthquake and killed several people in buildings adjoining the structure. On April 18, 1906 at 5:15 AM a quake of 8.25 on the Richter scale hit San Francisco. Greater destruction came from the fires afterwards. The city burned for three days. The combination destroyed 490 city blocks and 25,000 buildings, leaving 250,000...

Chicago citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. As fires rage in the background, the newly of San Francisco gather at Union Square. The tall steel skeleton, then known as the Union League Building, was under construction at the time of the earthquake, later finished, and still standing on Geary Street. The Butler Building at right, also under construction at the time. Its walls peeled away during the earthquake and killed several people in buildings adjoining the structure. On April 18, 1906 at 5:15 AM a quake of 8.25 on the Richter scale hit San Francisco. Greater destruction came from the fires afterwards. The city burned for three days. The combination destroyed 490 city blocks and 25,000 buildings, leaving 250,000.... 1906-04-18. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6598316. (Accessed October 16, 2018.)
APA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994, (1906-04-18) As fires rage in the background, the newly of San Francisco gather at Union Square. The tall steel skeleton, then known as the Union League Building, was under construction at the time of the earthquake, later finished, and still standing on Geary Street. The Butler Building at right, also under construction at the time. Its walls peeled away during the earthquake and killed several people in buildings adjoining the structure. On April 18, 1906 at 5:15 AM a quake of 8.25 on the Richter scale hit San Francisco. Greater destruction came from the fires afterwards. The city burned for three days. The combination destroyed 490 city blocks and 25,000 buildings, leaving 250,000.... Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/6598316
MLA citation style
Department of Defense. American Forces Information Service. Defense Visual Information Center. 1994. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/6598316>.
Note: These citations are programmatically generated and may be incomplete.