Johnston, M. (1990). Ansell: Portrait of an International Company. The Book Printer, Maryborough, Vic. Box 2 (MS Acc11.034)
Jon Drummond (brother) to Ian J. Mason [1: 2008]; Peter D. Drummond to Ian J. Mason [1: 2008] Box 17 (MS Acc11.034)
Keartland to Alfred J. North [2:1906-1916] - originals in SLNSW, Sydney; Keartland to A. Zietz [1:1913] - original in SLNSW, Sydney; Keartland to John M. Molesworth [2:1914-1915] - originals in Molesworth file Box 31 (MS Acc11.034)