77/ 544 Zwart, P. [Erve]. "Architectenbureau Ir. W.D. van de Erve b.i. (...)". Sheet of stationery, (±1935), 27,5x20,5 cm., letterpress letterhead in black and yellow, verso blank. "Architectenbureau Ir. W.D. van de Erve b.i. (...)". Envelope, (±1935), 11,1x14,7 cm., letterpress in black and yellow, verso blank.

- Sheet of stationery w. horizontal middle fold and trifle wrinkled in upper blank margin. = Rare.