Jef Verheyen, Paul De Vree, Publication of the manifesto 'Essentialism' (1958) in the periodical De Tafelronde 8, nr. 3, 1963. Periodical, ink on paper.
Jef Verheyen, Jozef Peeters, Englebert Van Anderlecht, Notebook, 1958-1961. Book.