The mourning-cross: or, England's Lord have mercy upon us [electronic resource] : Containing the certain causes of pestilential diseases; with an accompt of several modern plagues or visitation in times past, as well in other countries as in the city of London; as also, the number of those that then died, not onely on the plague, but of all diseases, Continued down to this present day, August 29. 1665. To which is likewise added, a necessary prayer for this present time.