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1882 A. J. Boyd Old Colonials 63 It may be that the exciting game of Tambaroora is not familiar to all my readers... Each man of a party throws a shilling, or whatever sum may be mutually agreed upon, into a hat. Dice are then produced, and each man takes three throws. The Nut who throws highest keeps the whole of the subscribed capital, and out of it pays for the drinks of the rest. The advantage of the proceeding lies in this: Where drinks are charged at sixpence, the subscription is double that amount for each... Thus if ten Nuts go in for a Tambaroora, with nobblers at sixpence, the winner pockets five shillings by the transaction.

1895 C. Crowe Austral. Slang Dict. 84 Tambaroora, a game of a shilling each in the hat and the winner shouts.

1897 Bulletin (Sydney) 18 Dec. (Red Page) The essence of a present-day tambaroora is a sweep for the purchase of drinks—frequently on the principle that more liquor can be purchased wholesale for 1s. 6d. than six thirsty people can buy for 3d. each. Hence ‘tambaroora muster’, when the droughty party musters all the coin it's possessed of, and one individual goes and bargains for the beer.

1901 Bull. Reciter (Sydney) 202 (title of poem) Tambaroora.

1945 S. J. Baker Austral. Lang. ix. 172 Just as the shout is an institution in this part of the world so are the..Tambaroora muster and a few other variations on the theme, all of which concern the creation of a jack-pot, usually with the object of buying drinks. The Tambaroora—taken from the name of an eastern township—dates from the early 1880s. The idea behind these expressions..is that everyone pays for himself.