c. 1822 Spencer Richards works with Richard Robinson & Co., the glass button manufacturer founded by Enoch Robinson’s cousins Richard and Willard Robinson.
c. 1825 Enoch Robinson begins manufacturing door knobs and other hardware, independently and with Spencer Richards and others, in Cambridge, Massachusetts.
c. 1830 Enoch Robinson and Spencer Richards collaborate on the mold for a whale-oil lamp manufactured by the New England Glass Co. The New England Glass Co., Manufacturer