Creating a Proxy Web Service Object - By replicating a Web service's functionality on a local server, you can circumvent the security and data marshalling problems inherent in this distributed application technology. Use a proxy object to act on behalf of the original Web service. - http://archive.devx.com/dotnet/articles/cp0901/cp0901-2/cpwso.asp
ASPToday - Using Web Services to Accept a Binary Large Object - Article by Robert Paxman. Demonstration how to store and retrieve BLOB data from an SQL server and how to create and use a Web Service to accept and convert an image file into a smaller "thumbnail" image. - http://www.asptoday.com/Content.aspx?id=1076
DeveloperLand.com [Webservices] - Articles explain building and using Web Services for .Net platform. - http://www.developerland.com/Web/Webservices/default.aspx
Role Playing - When it comes to security in .NET's Web services world, it's going to be vital to know how each application plays its part. An article by Roberta Bragg. - http://www.mcpmag.com/columns/article.asp?EditorialsID=364
.NET 247 : In-depth: Consuming an XML Web Service on DotNetJunkies - An XML Web Service consumer is an application that invokes the methods of an XML Web Service made available by a provider; the consumer feeds on the data derived from the XML Web Service provider. A consumer application may be another Web application, XML - http://www.dotnet247.com/247reference/articles/0/2550.aspx
Encrypting SOAP Messages - An article by Rob Howard, published in the MSDN. - http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnaspnet/html/asp09272001.asp
Large Data Strategies - An Article by Allen Wagner in the MSDN. - http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dn_voices_webservice/html/service11072001.asp?frame=true
Secure Web Services Using the SOAP Toolkit - Describes how to implement a secure Web Service using the SOAP Toolkit for Visual Studio 6.0, as well as how to implement a client application that can access the secure Web Service using the SOAP Toolkit. By Mary Kirtland, Microsoft. - http://msdn.microsoft.com/library/techart/Websvcs_usingsoap.htm
A Platform for Web Services - Presents an overview on the Web Services model for building applications. By Mary Kirtland, Microsoft. - http://msdn.microsoft.com/library/techart/websvcs_platform.htm