Illustrator and commercial artist. Sloane trained in commercial art in Sydney with Albert Collins and worked under him at the Smith & Julius art studio, the commercial arm of Sydney Ure Smith's enterprises.
'PORTRAIT: Bertha Sloane, photograph by Judith Fletcher, Home 1 December 1921. Wanda Radford, 'Society of Artists Open Day' (drawing includes Bertha Sloane, Thea Proctor, Sydney Ure Smith and John Moore) Home 1 November 1924, 25; photograph by Bernice Agar, 'Miss Bertha Sloane of Sydney and of Moorila Station N.S.W., the daughter of Mr and Mrs T.G. Sloane. Bertha does clever decorative art work and'.