>Jef Verheyen, Notebook, 1956-1961.Book, ink on paper.
>Jef Verheyen, Copies taken from Notebook 1957-1959, 1957-1959.Text, ink on paper (copies), 4 sides.
>Jef Verheyen, Notebook, 1957.Book, pencil and ink on paper.
>Jef Verheyen, Jozef Peeters, Englebert Van Anderlecht, Notebook, 1958-1961.Book.
>Jef Verheyen, Jozef Peeters, (Farewell) Letter from Jef Verheyen to Jozef Peeters (September 1960), 1960.Letter, ink in notebook.
>Galerie Bernard, Englebert Van Anderlecht, Jef Verheyen, Un ami peintre comme lui, 1961.Letter, ink in notebook, 2 sides.
>Jef Verheyen, Notebook, 1961.Book, ink on paper.
>Jef Verheyen, Notebook, 1962.Book, ink on paper.
>Jef Verheyen, Notebook, 1962.Book, ink on paper.
>Jef Verheyen, Notebook, 1964.Book, ink on paper.
>Jef Verheyen, Notebook 'De vreemdelingen en de uitverkorenen. Gedachten over het waarom', 1968.Book, ink on paper, A4.
>Jef Verheyen, Ivo Michiels, Notebook 'Nog uit te voeren werken', 1970-1973.Book, pencil and ink on paper, A4.
>Jef Verheyen, Sketchbook for 'Boek 40', 1972.Book, ink on paper, A4.
>Jef Verheyen, Notebook, 1973.Book, pencil on paper, A4.
>Jef Verheyen, Lucio Fontana, Notebook, 1973.Book, pencil and ink on paper, A4.
>Jef Verheyen, Carlo Van den Bossche, Notebook 'Opgedragen in herinnering aan meester Carlo Van Den Bosch', 1974-1975.Book, pencil on paper, A4.
>Jef Verheyen, Notebook 'Hommage aan Leonardo da Vinci', 1974.Book, pencil on paper, A4.
>Jef Verheyen, Notebook, 1975.Book, pencil on paper, A4.
>Jef Verheyen, Notebook 'La doute est ma seule vérité', 1975.Book, pencil on paper, A4.
>Jef Verheyen, Gallery New Selection, Notebook for '6 Variaties op een schema', 1976.Book, pencil on paper, A4.
>Roger Meuleman, Jef Verheyen, Notebook for 'Nachtschilderijen' , 1976.Book, pencil on paper, 34 pages.
>Jef Verheyen, Jos Macken, Kanno, Jean F. Buyck, Notebook 'Pasen 1978 Ten Bosch', 1978.Book, pencil on paper, 3 pages.
>Jef Verheyen, Galerie Edith Wahlandt, Notebook, 1978-1981.Book, ink on paper.
>Jef Verheyen, Notebook 'Het spiegelbeeld van de hersenen of iets over het ontstaan van beelden in het voorstellingsvermogen.', 1979.Book, ink on paper.
>Jef Verheyen, Notebook over Dia en het Spiegelbeeld, 1979.Text, ink on paper, 14 pages.
>Jef Verheyen, Galerie Edith Wahlandt, Erker Galerie, Stichting Veranneman, Notebook, 1979-1982.Book, pencil on paper, A4.
>Jef Verheyen, Notebook, 1980.Book, ink on paper.
>Jef Verheyen, Notebook, 1980.Book, ink on paper.
>Jef Verheyen, Erker Press, Erker Galerie, Travel diary (Sankt Gallen, Vienna, Paris, Marseilles, Soll, Italy), 1981-1984.Book, ink on paper.
>Jef Verheyen, Notebook, 1982-1983.Book, ink on paper, 50 pages.
>Jef Verheyen, Notebook, 1982.Book, ink on paper, 46 pages.
>Jef Verheyen, Dani Franque, Hugues C. Pernath, Leon In den Kleef, Hermann Goepfert, Notebook, 1983.Book, ink on paper, 38 pages.
>Jef Verheyen, Notebook '5 juni 1983', 1983.Text, pencil on paper, A4.
>Jef Verheyen, Scrapbook.Book, collage.
>Jef Verheyen, Outtakes from notebook.Text, ink on paper, 2 sides.