The Pele Plume (Io): Observations with the Hubble Space Telescope, by Spencer, Sartoretti, Ballester, McEwen, Clarke, and McGrath, submitted to Geophysical Research Letters April 3rd 1997.
A History of High-Temperature Io Volcanism at the Start of the Galileo Tour, by Spencer, Stansberry, Dumas, Vakil, Pregler, and Hicks, submitted to Geophysical Research Letters February 21st 1997.
Thermal emission from Lava Flows on Io, by R. Howell, accepted by Icarus January 1997. Available in compressed postscript format from here, or if that doesn't work, try anonymous ftp to goshawk.uwyo.edu in directory /outgoing/ijw, and get file flow_model_revised2.ps.Z. File size is 360 Kbytes
Volcanic Resurfacing of Io: Post-Repair HST Imaging, by Spencer, McEwen, McGrath, Sartoretti, Nash, Noll, and Gilmore, submitted to Icarus July 20th 1996, accepted December 10th 1996.
LPSC abstract: Violent Silicate Volcanism on Io in 1996, by J. Stansberry, J. Spencer, and R. Howell, January 1997. Available in postscript format from here
Other 1997 LPSC Io abstracts from the Galileo team are available in PC MS-Word and/or Postscript format from here.