If you are talking about the old Walden Knife Co, it was founded in 1870 (supposedly be former New York Knife Co employees) as the Walden Co-Operative Knife Co, with 18 employees. In 1874 they changed to a stock company. In 1893, George Schrade moved his Press Button Knife Co to Walden, and his knives were made in the Walden plant. In 1903, Walden Knife Co bought the patent and Schrade's interest in the Push Button Knife.
In 1911, EC Simmons Hardware Co bought Walden Knife Co. In 1922, they merged with Winchester, and Winchester ran the plant until 1923, when it was liquidated. The equipment was moved to New Haven, CT, and the buildings were sold to Schrade Cutlery Co.
Employment in 1883 was 125 workers, and over 200 in 1891. In 1911, over 600 employees worked for Walden, and they were the largest producer of pocketknives in the world at that time. Given the scarcity of Walden-marked knives, I would bet that a large portion of their production was contract work (EC Simmons being just one of many brands).