LOW COUNTRIES -- OPTICAL VIEWS -- "PROSPECT VON AMSTERDAM. 'T Rockin de Nieuwe-Zijds Kapel en Beurs te Amsterdam." Augsburg, I. Carmine, (c. 1750). Cont. handcold. engr. optical print. 270 x 395 mm (image size). -- "LA RIVIERE D'AMSTEL a Amsterdam pres le Logement t' Rondel." Augsburg, (c. 1760). Cont. handcold. engr. optical print by J.B. Winckler after de Beyer. 282 x 420 mm (image size). (Stain in upper margin, a few marg. holes). -- And 3 o. optical views. (1 Amsterdam, 2 Dordrecht). (5). (All w. traces of former hinging).