There is a feature length article written by Tom Junod at The Deal of the Century (Sept 11, 2009). It begins:
As our financial system entered free fall last September and the people who ran Wall Street struggled to avert a complete economic collapse, an epic battle for power and, above all, cash was being waged between Barclays and JPMorgan Chase. The inside story of how Bob Diamond walked away with everything he wanted.
The article focuses on the personalities and events involving Barclay's purchase of Lehman during the days of September 12-18, 2008.