1. Bill Gate's Speech at the Microsoft Summit
2. Cigarette taxes and demand elasticity
3. Darnell Group
4. Elasticity of Demand: "Hints on Obtaining Low Fares"

Alfred Marshall
Information about the person who popularized and help develop neoclassical economics (and the concept of elasticity).

Related resources:

Other economic resources
This page contains a set of links to economic resources that may be of interest to introductory economics students.