Onresco : washable water paint for wall and ceiling decoration.
A trade sample card issued by the Silicate Paint Co. around 1900 to show customers the shades of Onresco, a washable water paint for walls and ceilings. The picture shows a grid of numbered colour swatches under the heading listing the stock shades, with a note that mixing two or more colours yields many more. A designer could use the tidy numbered palette of muted blues, pinks, greens and browns as a reference for period-appropriate interior colour schemes.
