http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
significance of the frontier in American history
"Two hundred seventy-five copies ... printed ... Copy number 68. [Signed] Elfriede Abbe."
"This essay was first read at the ninth annual meeting of the American Historical Association, held in Chicago, July 11-13, 1893."