Llewellyn Bentley Lancaster vs William Henry Jonas
New South Wales Championship Sydney AUS round 6.2 1901.07.25
Queen’s Gambit Declined: Alapin Variation 1/2-1/2

William Henry Jonas vs Spencer Crakanthorp
New South Wales Championship Sydney, NSW, Australia round 13 1908.03.??
Bishop’s Opening 1/2-1/2

Julius Leigh Jacobsen vs William Henry Jonas
New South Wales Chess Championship Sydney AUS round 7.1 1901.07.29
English Opening: Carls-Bremen System 1-0