Juhani Lemmetti, AERO, Helsinki, Finland
"Nuovi disegni di Tapio Wirkkala," Domus, no. 341, April 1958, pp. 46-48 for similar examples
Pirkko Kovanen, ed., Asko, no. 2, Lahti, 1958, pp. 10-12
Marianne Aav, Rosa Barovier Mentasti and Gordon Bowyer, et al., Tapio Wirkkala - eye, hand and thought, exh. cat., Museum of Art and Design, Helsinki, 2000, pp. 281, 283 for similar examples, p. 380