David Johnson has authored or contributed to several books, including MCSE Guide to Microsoft Windows NT Workstation 4.0, Guide to Networking Essentials, and Exam Cram for NetWare 4.11 to NetWare 5 Update.
James Gaskin is the author of many books written about real networks for real network managers and power users. He authored Mastering NetWare 6 (and 5.1, 5.0, and 4.11) and co-authored Networking with NetWare for Dummies, among other Novell titles.