http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Schedule of steamers appointed to convey mails from U.S. to foreign countries, also to Territory of Hawaii and to possessions of U.S
Includes data on air mail fees and transit time, by country and route.
Electronic reproduction. [Bethesda, Md.] : ProQuest, 2014. digital, PDF file. ProQuest U.S. Executive Branch Documents Mode of access: World Wide Web via ProQuest website.