The vaccinating lancet in this set, designed for giving smallpox vaccines by scarification, was devised by the Scottish physician, Thomas Graham Weir (1812-1896). According to a notice published in 1860, this instrument “has the merits of simplicity and convenience in a marked degree.” This was owned by Enoch T. Winter (d. 1871), a Yale graduate (class of 1845), and a physician in Harlem, N.Y.
Ref: Viator, Letter from Edinburgh, in The Boston Medical and Surgical Journal 62 (1860): 337-340, on 340.