[3] She received a commission for some plaques from the Wedgwood company and although these designs were awarded a silver medal at the Exposition des Art Decoratifs in Paris in 1925, Zinkeisen decided to specialise in portrait painting and mural work.

In 1935, Anna and Doris Zinkeisen were commissioned by the Clydebank shipbuilders John Brown and Company to paint murals on the ocean liner RMS Queen Mary.

During World War II, Anna Zinkeisen worked as a Medical Artist and nursing auxiliary in the Order of St John at St. Mary's Hospital, Paddington.

[12] In 1944, Anna and Doris Zinkeisen were commissioned by United Steel Companies (USC) to produce twelve paintings which were reproduced in the trade and technical press in Britain, Canada, Australia and South Africa.

[15] This mural had originally been intended as a memorial for the late King George VI (1895–1952) for the Royal Chapel at Windsor Great Park commissioned in 1962, but cancelled in 1964.