Open access datasets for teaching IV regression I am looking for a dataset to show (to a group of engineers) how the instrumental variables technique is used in econometric practice. 

I could always make up my own data, but I think it might be more interesting to everyone using real (not to complicated) data to replicate an actual study.



ps. Forgive me if this is off-topic for this site.
I can recommend this paper as an example:

The Colonial Origins of Comparative Development: An Empirical Investigation

Daron Acemoglu, Simon Johnson, and James A. Robinson


http://economics.mit.edu/faculty/acemoglu/data/ajr2001 (paper and data)


This example is famous not only thanks to the creative use of instrumental variables, but also because of the subsequent discussion about the validity of the instruments.

And relevant discussions:


Bazzi, Samuel, and Michael A. Clemens. “Blunt Instruments: Avoiding Common Pitfalls in Identifying the Causes of Economic Growth.” American Economic Journal: Macroeconomics 5, no. 2 (2013): 152–86.
Deaton, Angus. “Instruments, Randomization, and Learning about Development.” Journal of Economic Literature 48, no. 2 (2010): 424–55.


Secondly,

Instrumental Variables and the Search for Identification: From Supply and Demand to Natural Experiments

Angrist, Joshua D., and Alan B. Krueger


http://economics.mit.edu/files/18



  We discuss the mechanics of instrumental variables and the qualities
  that make for a good instrument, devoting particular attention to
  instruments derived from "natural experiments."


Examples follow.