VINKENOOG, S. Coito ergo sum. Samenspraak der eenwording. W. 4 illustr. in text by M. Wielinga. Sm-fol. - Id. O boze boom i.m. Norma Pater. Narrow-4°. - (Bedum), Uitg. Exponent, 1986. 2 vols. Owrps. Both printed in 115 numb. copies. -- Id. Heren zeventien. 1953. Owrps. W. author's autograph dedication. -- Id. Made in Limburg. (1978). Owrps. Signed by the author. -- And 13 o. by V. (17).