Sabotage's The Machine Drum Library (Vintage) WAV | 665 MB
With 214 machines sampled for drums (no duplicates in here) and many of the more popular machines having multiple kits.(This is because kits from various sources are recorded with different equipment and on different settings. And therefore they will not sound alike either.) This is the largest collection of vintage machines I know of. These samples have been gathered over a long period of time from various sources and are all believed to be in the Public Domain.