Apache SOAP Related Books (Newest to Oldest)

• Cross-Platform Web Services Using C# and Java by Brian Hochgurtel, Charles River Media, March 2003.
  
• Java and SOAP by Robert Englander, Oreilly, May 2002.
  
• Web Services Essentials by Ethan Cerami, Oreilly, February 2002.
  
• Professional Java Web Services by Scott Cable, et al, Wrox, January 2002.
  
• Programming Web Services with SOAP by James Snell, et al, Oreilly, December 2001.