Prior to building the BERTIE, the Askews were involved with the construction and operation of the KALULA, another small side-wheel steamer. The Askew's found that the KALULA was too small for their plans and built the BERTIE larger.
|Steam Engine and Boiler for Sale at Half Price, Windsor Albemarle Times, 18 September 1874|
|Auction Sale Of Steam Engine & Barge!, Windsor Albemarle Times, 29 January 1875|
|E.S. Askew, To Willie [Wilbur Askew], 10 July 1877|
|E. S. Askew, To Father [Zephaniah Askew], 17 December 1877|