Negretti and Zambra (Corporate Name)

Its Descriptive catalogue of stereoscopes and stereoscopic views, 1859: t.p. (Negretti and Zambra)

Expositions of the cartoons of Raphael, 1860: t.p. (illustrated by photos. printed by Negretti and Zambra)

WWW UTMB Academic Resources home page, Aug. 1, 2005 (Henry Negretti (d. 1879) and Joseph Warren Zambra (d. 1877) were in partnership and sold a variety of scientific instruments; the company conducted business at different locations in London, beginning in 1850 and continuing to the end of the century)