New HTML Help Standard - A technical overview of the HTML Help standard from a C/C++ developer's perspective. (Keith Bugg / C/C++ Users Journal) - http://www.ddj.com/dept/cpp/184403533
Microsoft HTML Help - The official HTML Help site with documentation, editors, and viewers. (Microsoft) - http://msdn.microsoft.com/library/default.asp?url=/library/en-us/htmlhelp/html/hworiHTMLHelpStartPage.asp
HTML Help Center - The HTML Help Center contains the results of the research conducted in the area of Microsoft HTML Help by Delmar Computing Services of Tipton, Michigan. Developers and help authors will find high-quality samples, source code, and tools for working with HT - http://frogleg.mvps.org/helptechnologies/
Help Consultants - Resources, downloads, links, and tutorials on the use of Help Authoring software. - http://www.magrino.com
HTML Help - Context Help Ids - Tutorial on setting up contextual help IDs. By The Helpware Group. - http://www.helpware.net/htmlhelp/how_to_context.htm
HTML Help - Using Merge - Tutorial on getting merged CHM files working correctly. By The Helpware Group. - http://www.helpware.net/htmlhelp/how_to_merge.htm