Painter Charley Toorop mentioned the Rietveld interior of De Wolff Peereboom in a letter to Leo Gestel, dated 14 November 1941. See M. Trappeniers, Leo Gestel als Modernist, Haarlem 1983, p.29, for the letter by Toorop.
For comparison see also:
Peter Vöge, The Complete Rietveld Furniture, Rotterdam, 1993, p. 86-87, no. 128
Marijke Küper and Ida van Zijl, G.Th. Rietveld 1888-1964, het volledige werk, Utrecht, 1992, p. 147, for the design drawing