Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
The Wayback Machine - https://web.archive.org/web/20070629200803/http://planetarynames.wr.usgs.gov:80/jsp/FeatureTypes2.jsp?system=Jupiter&body=Io&systemID=5&bodyID=7&sort=AName&show=Fname&show=Lat&show=Long&show=Diam&show=Stat&show=Orig
The latitude, longitude, and size fields in the Io portion of the Gazetteer
of Planetary Nomenclature have recently been updated. The latitude,
longitude, and size of each feature were digitally measured in 2005 using
the latest Io mosaic and the November 2003 version of the control network
computed at USGS Flagstaff.