The Getty Research Library at the Getty Institute has over 600 digitized images of Mexico from its special collections by Mexican, American, and European photographers in a multitude of photographic formats. The earliest is from 1857, and these photographic images document the history of the nation from different perspectives. To get acquainted with a timeline of Mexico starting in 1810 and going through 1923, visitors should click on "Chronology" on the right hand side of the page. Throughout the chronology are photos and brief descriptions that can be viewed in more depth if users click on "View Full Record", beneath the photo. An extremely helpful and interesting glossary of terms and names can be viewed if visitors click on "Glossary" on the left hand side of the page. The "Glossary" contains the definitions of particular types of photographic images, or processes, as well as explanations of the many ethnic groups that inhabited Mexico at one time or another. Another very interesting section to peruse is of the "Photographers", which is also accessible on the left hand side of the page. With three-dozen photographers to read about including Wilhelm Kahlo, Frida Kahlo's father, visitors will find that some photographers made postcards from the images taken of the revolution in northern Mexico.