Subject: cohomology of BO(n)
From: Larry Smith <larry@uni-math.gwdg.de>
Date: Tue, 01 Nov 2005 16:20:37 +0100

I think I saw a question some days ago concerning the integral
cohomology of BO(n). I had a friend when I was a grad student
who not only computed that, he did much better, he computed the 
cohomology with twisted gaussian integer coefficients of these
spaces. This computation contains both the ordinary and twisted 
integer answers. Unfortunately the anti Viet-Nam war movement 
swallowed him up and his dissertation was never published. I
suspect it is available from University Microfilms though.
Here is the relevent info:
    Title: Homology with Local Coefficients and Characteristic Classes
    Author: Robert Greenblatt
    PHD Dissertation Yale University 1963
His dissertation was never published as such, just a short note
that was extracted from it was published in the Proc. Camb. Phil. Soc 
sometime in the 1960s about the twisted Bockstein.
I have a copy of the dissertation but am unsure what I would be 
allowed ethically speaking to do with it.

As I wrote, it ought to be available from University Microfilms,
so perhaps you could post the relevent info and leave it at that.

Bob was one of Bill Massey's students. I lost contact with him during 
the years. He resurfaced for a short time while I was at
Indiana and Peter Hilton and I tried to help him out, but he
disappeared on us at a crucial moment and I have no idea what 
has become of him.

Cheers,

Larry Smith