Wärtsilä showroom, Helsinki
'Nello studio di Birger Kaipiainen, ad Helsinki', Domus, no. 387, February 1962, pp. 48-49 for similar examples
Maria Berg, Kaipiainen, Helsinki, 1986, n.p. for similar examples
Harri Kalha, Birger Kaipiainen, Helsinki, 2013, n.p. for similar examples