Two resources that may be of interest

1. Evan Roberts shares the North Atlantic Population Project at the University of Minnesota. It has historical census for the U.S., Canada, and several Northern European countries. This looks like a great resource. It's set up very much like the IPUMS for anyone familiar with getting data there.

2. Keynes's collected works are being published in paperback and electronically. So if any of you have several hundred dollars to spend on my Christmas present...