[5][6] McKenzie undertook several commercial commissions, including producing poster designs for the London and North Eastern Railway.
[4] McKenzie's sister, Winifred, was also an artist and during World War II they moved to St Andrews in Scotland.
[4] At St Andrews, along with Annabel Kidston, they organised drawing and engraving classes for the Allied troops, many from Poland, stationed there.
[9] She painted in oil and gouache and produced many prints, often in a Cubist style with a palette of greys, ochre and black.
[7][9] The two sisters held a number of joint exhibitions including one at the Cork Street Gallery in London and another at the English Speaking Union in Edinburgh.