The 10-tenths chassis history archive is a GREAT starting point for research about just about any series-built racing car. Since I find it so valuable, I want to contribute when I can. Lately, I've been collecting quite a lot of information about the British Racing Partnership team cars. The BRP team built exactly three cars for Grand Prix racing (one for 1963 and two of an evolved design for 1964) plus two cars built for the Indy 500 (for 1965, but also raced in '66 and '67.)
I've just published an article with pretty much everything I know about the history and the provenance of the five cars. I propose it might be a good starting point for others to build on. Here's the link:
Kurt DelBene's 1964 B.R.P. (BRP-BRM) Grand Prix Race Car
Here are a couple snapshots that provide an overview of the design:
(The full article includes ~80 large color photos, mostly of design and construction details.)