Very Big Props has a great collection of some of the largest and most complex propliners ever built; the Boeing C97, the Lockheed Super Constellation and the Douglas DC7. In one form or another, all three reigned supreme over the North Atlantic air routes and all ended up as careworn freighters trailing clouds of smoke behind them as they approached the scrap man.
Big twins like the C46 and the C119, also used large engines, so they feature too, along with some slightly smaller veteran propliners that either got in the way, or were too good to miss out.