I expect I missed a huge picture-heavy thread marking the GM centenary last month, but I've just stumbled upon this GM retrospective. It's quite interesting.
www.detnews.com/apps/pbcs.dll/article?AID=/20080813/SPECIAL01/80805001
www.detnews.com/apps/pbcs.dll/article?AID=/20080813/SPECIAL01/80805001