This register, found tucked into a family Bible, catalogs childhood diseases and vaccinations of the nine siblings in the Fisher family, who lived in Philadelphia in the nineteenth century. The pages below show the illnesses suffered by Hannah Wharton Fisher (born 1816), her sister Sarah Fox Fisher (b. 1820), their brother William Wharton Fisher (b. 1822), and their brother Thomas Wharton Fisher (b. 1827).