: Confirms the file is a standard JPEG compressed image . Likely Content and Sources
: The Wayback Machine can often retrieve images that were once part of a digital collection that has since moved or been updated. Why archives use these names Photographs and Graphic Works at the National Archives lex004002014614104.jpg
: This often refers to a specific collection or institution. In many archival contexts, "LEX" is associated with the LEXIS/NEXIS databases or, more specifically in image archiving, the L'Illustration (a French weekly newspaper) digital archive, where thousands of historical images are indexed using this alphanumeric format. : Confirms the file is a standard JPEG compressed image