John A. Perry and Milo S. Burr opened a Patent Medicine business at 1 Cornhill, in Boston in 1853. They were listed the same until 1855, when Perry left. Starting in 1856, the company was called Milo S. Burr & Co (Henry B. Foster and G. L. Seaver). The Hungarian Balm continued to be marketed by Burr & Co. One bottle found with a label was marketed by Burr, Foster & Co. Burr seemed to have a habit of taking in partners for a couple of years, and when they left their preparations stayed with him. Burr got rid of Foster in 58, in 59 he picked up G. H. Reed, then got rid of Seaver by 1860.
According to the Wilsons, Perry threw in with J. Russell Spalding after leaving Burr, and they were partners until around 1880. I do not know where John Perry lived right after he moved, but in 1864 he was listed as an Apothecary on Well's Block in Manchester, New Hampshire. In 1867, Perry was again listed together with Milo S. Burr. M.S. Burr & Co. was then at 26 Tremont Street. He was there at least until 1871; in 72 he was on his own again at 144 Northampton, and by 1873 he had moved to 623 Shawmut Ave. Starting in 1875, Albert Q. and Thomas De Q. Perry Joined John in the Apothecary business. They were probably his sons. The family business of John A. Perry & Co. continued until 1879.