Has anyone come across a decent definitive book, thesis or research about WW2 Lend Lease? I'm primarily interested in the minutiae of the famous US-UK series of Lend-Lease deals, but of course there were many other LL agreements between all of the allied nations. I'm after detail such as "what was in", "what was out" (direct UK purchases) and "what was actually out but declared in for political reasons" (pre-December 1941). I'm currently in a debate elsewhere with a load of Spams who typically believe the myth that everything that crossed the Atlantic was a kind gift from benevolent Uncle Sam, but I also have long wanted to find an authoritative source about the statistics of war production and transfers. Thanks all.