As it turns out, Will Harvey (the author) is a pen name for Dr. Bill Wattenburg, scientist and radio talk show host. After writing How to Find and Fascinate a Mistress (and Survive in Spite of it All), Wattenburg did the talk show circuit as comedian Will Harvey. It was so over the top, not even his alter ego could take it seriously.
While I haven't read the book, kessenich's write-up makes it sound terrible. However, it must have been funny at the time, because it earned Wattenburg 1.3 million dollars between 1972 and 1980.