The company gradually grew; it began printing stamps in 1852, and Waterlow' sons Alfred, Walter, Sydney and Albert joined the business.
公司逐渐地发展；从1852年起，它开始印制邮票，同时华德路的儿子阿尔弗雷德、沃尔特、西尼与阿尔伯特也加入进来。