Draper, of the University of New York, and the Eastman Walker Company, of Rochester, were the chief promoters of dry plate photography. Edward W. Byrn.十九世纪发明进展.
That encouraged the promoters, and they issued a little circular describing the business. 鲁伯特·萨金特·荷兰.历史性发明.
A determined stand was made against it, and the promoters and their engineers, chief among whom was Stephenson, had to be very modest in their claims. 鲁伯特·萨金特·荷兰.历史性发明.
Public diversions have always been the objects of dread and hatred to all the fanatical promoters of those popular frenzies. 亚当·斯密.国富论.