repeatedly carried out leaflet campaigns to inform the inhabitants of West Berlin – including the Poles – about martial law and the suppression of the democratic opposition.
Copper engraving after a painting by David Beck, 32.3 x 22.2 cm, below the text: Je. Falck S.R.M. Sueciae Chalcographus, below: cum priv. R.S. Stockholmiae 1651.