My collection includes John Barleycorn, As The Eagle Flies, The Low Spark of High Heeled Boys, Fantasy Factory, and a double anthology whose name escapes me. It was a great band with and without Dave Mason.
Interestingly, saw him with a band year later in Wilmington DE. He was great but it was so loud I only lasted an hour. Listened to another 30 'inutes from the lobby before my wife dragged me to a bar. Would love to see Winwood.