March 1, 2007 Geopulse and 3.5 kHz profiles from LAURENTIAN 89016 lines 38-40 were scanned using an Ideal Contex Crytal TX40 scanner using ScanOS software configured at 400 dpi, black and white adaptive, in uncompressed tiff file format by the USGS Woods Hole Science Center Data Library/Archive. Files were written to dvd using Nero SmartStart on a Windows XP platform. Questions should be forwarded to Nancy Soderberg (508-457-2275; nsoderberg@usgs.gov) in the WHSC Data Library/Archive, 11 Woods Hole Road, Falmouth, MA 02540