The form of the banners made for Procession at Middelheim Museum is influenced by the work of Suffragette artist Mary Lowndes. In 1909 she published her manifesto On Banners and Banner-making in the form of a pamphlet

A banner  is not a literary affair, it is not a placard;

leave such to boards and sandwichmen.

A banner is a thing to float in the wind, to flicker in the breeze, to flirt its colours for your pleasure, to half show and half conceal a device you long to unravel:

you do not want to read it, you want to worship it.

(Mary Lowndes. On Banners and Banner-Making. 1909)